A six-sided storm pattern circles Saturn's north pole. The hexagon spans about 20,000 miles and is a jet stream of 200-mile-per-hour winds, NASA says.

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A six-sided storm pattern circles Saturn's north pole. The hexagon spans about 20,000 miles and is a jet stream of 200-mile-per-hour winds, NASA says.

A six-sided jet stream about 20,000 miles across circles Saturn's north pole, NASA says.

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In ideal conditions, kelp can grow up to 18 inches in a single day. Kelp forests provide food and shelter for thousands of species, NOAA says.

In ideal conditions, kelp can grow up to 18 inches in a single day. Kelp forests provide food and shelter for thousands of species, NOAA says.

NASA's space shuttles flew 135 missions in 30 years, from the first launch on April 12, 1981, to the final landing on July 21, 2011.

NASA's space shuttles flew 135 missions in 30 years, from the first launch on April 12, 1981, to the final landing on July 21, 2011.

In a healthy person, a red blood cell usually survives for about 120 days, a 2023 review notes. Mature human red blood cells also have no nucleus.

In a healthy person, a red blood cell usually survives for about 120 days, a 2023 review notes. Mature human red blood cells also have no nucleus.

The 19th Amendment, barring denial of the vote on account of sex, was first introduced in Congress in 1878. It was not ratified until August 18, 1920.

The 19th Amendment, barring denial of the vote on account of sex, was first introduced in Congress in 1878. It was not ratified until August 18, 1920.

Gray whales travel about 10,000 miles round-trip every year, and some go more than 14,000, one of the longest annual migrations of any mammal, NOAA says.

Gray whales travel about 10,000 miles round-trip every year, and some go more than 14,000, one of the longest annual migrations of any mammal, NOAA says.

Daytime on Mercury can reach 800 degrees Fahrenheit. With no substantial atmosphere to hold that heat, nights can plunge to minus 290 degrees, NASA says.

Daytime on Mercury can reach 800 degrees Fahrenheit. With no substantial atmosphere to hold that heat, nights can plunge to minus 290 degrees, NASA says.

Arches National Park in Utah has over 2,000 documented natural stone arches, from sliver-thin cracks to spans greater than 300 feet, the National Park Service says.

Arches National Park in Utah has over 2,000 documented natural stone arches, from sliver-thin cracks to spans greater than 300 feet, the National Park Service says.

On May 23, 1934, Bonnie and Clyde were killed in a police ambush near Sailes, Louisiana, ending one of the biggest manhunts the nation had seen, the FBI says.

On May 23, 1934, Bonnie and Clyde were killed in a police ambush near Sailes, Louisiana, ending one of the biggest manhunts the nation had seen, the FBI says.

In the average adult at rest, the brain is only about 2% of body weight, yet it uses about 20% of the oxygen and calories the body consumes.

In the average adult at rest, the brain is only about 2% of body weight, yet it uses about 20% of the oxygen and calories the body consumes.

The Moon is shrinking. As its interior cools, it has gotten more than about 150 feet skinnier over the last several hundred million years, NASA says.

The Moon is shrinking. As its interior cools, it has gotten more than about 150 feet skinnier over the last several hundred million years, NASA says.

The statue inside the Lincoln Memorial is made of 28 pieces of marble. It stands 19 feet tall and weighs 120 tons, the National Park Service says.

The statue inside the Lincoln Memorial is made of 28 pieces of marble. It stands 19 feet tall and weighs 120 tons, the National Park Service says.

Babe Ruth hit 60 home runs in 1927, a single-season record that stood for 34 years. He finished his career with 714.

Babe Ruth hit 60 home runs in 1927, a single-season record that stood for 34 years. He finished his career with 714.

About half of Earth's oxygen production comes from the ocean. Tiny Prochlorococcus bacteria account for up to 20% of global oxygen production, NOAA says.

About half of Earth's oxygen production comes from the ocean. Tiny Prochlorococcus bacteria account for up to 20% of global oxygen production, NOAA says.

NASA's Vehicle Assembly Building is 525 feet tall. Its high bay doors are 456 feet high and take about 45 minutes to open or close completely.

NASA's Vehicle Assembly Building is 525 feet tall. Its high bay doors are 456 feet high and take about 45 minutes to open or close completely.

Your skeleton is not as permanent as it looks. Bone is constantly broken down and rebuilt, and most of the adult skeleton is replaced about every 10 years.

Your skeleton is not as permanent as it looks. Bone is constantly broken down and rebuilt, and most of the adult skeleton is replaced about every 10 years.

On May 20-21, 1932, Amelia Earhart became the first woman to fly nonstop and alone across the Atlantic: 2,026 miles in about 15 hours.

On May 20-21, 1932, Amelia Earhart became the first woman to fly nonstop and alone across the Atlantic: 2,026 miles in about 15 hours.

Sand temperature decides whether a sea turtle hatches male or female. A 2018 study found 99.1% of young green turtles from warmer northern Great Barrier Reef beaches were female.

Sand temperature decides whether a sea turtle hatches male or female. A 2018 study found 99.1% of young green turtles from warmer northern Great Barrier Reef beaches were female.

Jupiter's moon Ganymede is the largest moon in the solar system, bigger than the planet Mercury. It's also the only moon known to have its own magnetic field.

Jupiter's moon Ganymede is the largest moon in the solar system, bigger than the planet Mercury. It's also the only moon known to have its own magnetic field.

Mount Rainier carries 28 major glaciers. Together with its smaller snow and ice patches, they cover about 30 square miles and feed five major river systems.

Mount Rainier carries 28 major glaciers. Together with its smaller snow and ice patches, they cover about 30 square miles and feed five major river systems.

Cliff Palace, built into a cliff at Mesa Verde in Colorado, has 150 rooms and 23 kivas. It was likely home to more than 100 people, the National Park Service says.

Cliff Palace, built into a cliff at Mesa Verde in Colorado, has 150 rooms and 23 kivas. It was likely home to more than 100 people, the National Park Service says.

St. Louis' Gateway Arch is 630 feet tall. That's 75 feet taller than the Washington Monument and more than twice as tall as the Statue of Liberty.

St. Louis' Gateway Arch is 630 feet tall. That's 75 feet taller than the Washington Monument and more than twice as tall as the Statue of Liberty.

Olympus Mons on Mars is the largest known volcano in the solar system. Its base sprawls across about 373 miles, NASA says.

Olympus Mons on Mars is the largest known volcano in the solar system. Its base sprawls across about 373 miles, NASA says.

An Asian elephant pregnancy lasts 21.5 to 22 months, nearly two years. The calf usually weighs between 150 and 350 pounds at birth.

An Asian elephant pregnancy lasts 21.5 to 22 months, nearly two years. The calf usually weighs between 150 and 350 pounds at birth.

In 1803, the United States bought 828,000 square miles of land from France for $15 million. The Louisiana Purchase doubled the size of the country.

In 1803, the United States bought 828,000 square miles of land from France for $15 million. The Louisiana Purchase doubled the size of the country.

Arctic terns weigh under 125 grams, yet a 2010 tracking study found some of them flew more than 80,000 kilometers in a single year of migration.

Arctic terns weigh under 125 grams, yet a 2010 tracking study found some of them flew more than 80,000 kilometers in a single year of migration.

ENIAC, the Army's electronic computer dedicated in 1946, weighed over 30 tons and drew almost 200 kilowatts of power. It was built to compute artillery firing tables.

ENIAC, the Army's electronic computer dedicated in 1946, weighed over 30 tons and drew almost 200 kilowatts of power. It was built to compute artillery firing tables.

The adult human skeleton usually has 206 named bones. Eighty form the body's central axis, and the other 126 make up the limbs and the girdles that attach them.

The adult human skeleton usually has 206 named bones. Eighty form the body's central axis, and the other 126 make up the limbs and the girdles that attach them.

Denied a concert hall because of her race, Marian Anderson sang from the steps of the Lincoln Memorial on April 9, 1939, to a crowd of 75,000 people.

Denied a concert hall because of her race, Marian Anderson sang from the steps of the Lincoln Memorial on April 9, 1939, to a crowd of 75,000 people.

A two-toed sloth's fur can turn green. Its hairs have grooves running along their length, and algae grow in them, helping camouflage the sloth in the treetops.

A two-toed sloth's fur can turn green. Its hairs have grooves running along their length, and algae grow in them, helping camouflage the sloth in the treetops.

Pluto was named by an 11-year-old girl. In 1930, Venetia Burney of Oxford, England, suggested the name, and Lowell Observatory selected it.

Pluto was named by an 11-year-old girl. In 1930, Venetia Burney of Oxford, England, suggested the name, and Lowell Observatory selected it.

The deepest part of the ocean, the Challenger Deep, is about 35,876 feet down. That's roughly three times the ocean's average depth of 12,080 feet, NOAA says.

The deepest part of the ocean, the Challenger Deep, is about 35,876 feet down. That's roughly three times the ocean's average depth of 12,080 feet, NOAA says.

The flag that became the Star-Spangled Banner measured 30 by 42 feet. Mary Pickersgill and her helpers spent about seven weeks sewing it and a second flag in 1813.

The flag that became the Star-Spangled Banner measured 30 by 42 feet. Mary Pickersgill and her helpers spent about seven weeks sewing it and a second flag in 1813.

In 1995, Hubble spent 10 days staring at a patch of sky about the size of a pinhead held at arm's length. The image revealed roughly 3,000 distant galaxies.

In 1995, Hubble spent 10 days staring at a patch of sky about the size of a pinhead held at arm's length. The image revealed roughly 3,000 distant galaxies.

NIST-F2, an atomic clock launched in 2014 to help keep official U.S. time, would neither gain nor lose one second in about 300 million years.

NIST-F2, an atomic clock launched in 2014 to help keep official U.S. time, would neither gain nor lose one second in about 300 million years.

Coast redwoods can grow taller than 370 feet and live up to 2,000 years. But about 96% of the original old-growth coast redwoods have been logged, the National Park Service says.

Coast redwoods can grow taller than 370 feet and live up to 2,000 years. But about 96% of the original old-growth coast redwoods have been logged, the National Park Service says.

Al Capone was brought down by his taxes. In 1931, a federal jury convicted him of tax evasion, and he was sentenced to 11 years in prison.

Al Capone was brought down by his taxes. In 1931, a federal jury convicted him of tax evasion, and he was sentenced to 11 years in prison.

The Big Room inside New Mexico's Carlsbad Cavern covers 8.2 acres. It's the largest readily accessible cave chamber in North America, the National Park Service says.

The Big Room inside New Mexico's Carlsbad Cavern covers 8.2 acres. It's the largest readily accessible cave chamber in North America, the National Park Service says.

On February 20, 1962, John Glenn became the first American to orbit Earth. He circled the planet three times in 4 hours, 55 minutes aboard Friendship 7.

On February 20, 1962, John Glenn became the first American to orbit Earth. He circled the planet three times in 4 hours, 55 minutes aboard Friendship 7.

The human brain is often said to hold 100 billion neurons. When researchers counted in 2009, adult male brains averaged about 86 billion.

The human brain is often said to hold 100 billion neurons. When researchers counted in 2009, adult male brains averaged about 86 billion.

On November 24, 1971, a hijacker calling himself Dan Cooper jumped from a jet with $200,000 in ransom money. He was never found, the FBI says.

On November 24, 1971, a hijacker calling himself Dan Cooper jumped from a jet with $200,000 in ransom money. He was never found, the FBI says.

An octopus has three hearts. Two pump blood through its gills to pick up oxygen, and the third sends that oxygen-rich blood around the rest of its body, NOAA says.

An octopus has three hearts. Two pump blood through its gills to pick up oxygen, and the third sends that oxygen-rich blood around the rest of its body, NOAA says.

Uranus is tilted 97.77 degrees, so it rolls around the Sun on its side. That gives it the most extreme seasons in the solar system, including 21-year-long dark winters.

Uranus is tilted 97.77 degrees, so it rolls around the Sun on its side. That gives it the most extreme seasons in the solar system, including 21-year-long dark winters.

The very first U.S. patent went to Samuel Hopkins on July 31, 1790, for a way of making potash, a fertilizer ingredient. President George Washington signed it.

The very first U.S. patent went to Samuel Hopkins on July 31, 1790, for a way of making potash, a fertilizer ingredient. President George Washington signed it.

A 2010 study found fingernails grew about 3.47 millimeters a month on average, more than twice as fast as toenails, which grew 1.62 millimeters.

A 2010 study found fingernails grew about 3.47 millimeters a month on average, more than twice as fast as toenails, which grew 1.62 millimeters.

Bowhead whales can live an extraordinarily long time. NOAA Fisheries says newer aging techniques suggest some may live more than 200 years.

Bowhead whales can live an extraordinarily long time. NOAA Fisheries says newer aging techniques suggest some may live more than 200 years.

On October 14, 1947, Chuck Yeager flew the Bell X-1 faster than the speed of sound for the first time: Mach 1.06, about 700 miles per hour.

On October 14, 1947, Chuck Yeager flew the Bell X-1 faster than the speed of sound for the first time: Mach 1.06, about 700 miles per hour.

From 1892 to 1924, more than 12 million immigrants passed through Ellis Island. For most, the inspection that decided their future took just 3 to 7 hours.

From 1892 to 1924, more than 12 million immigrants passed through Ellis Island. For most, the inspection that decided their future took just 3 to 7 hours.

The May 3, 1999, tornado near Bridge Creek, Oklahoma, was rated F5. Tornado F-scale ratings follow the damage a storm leaves behind, not radar measurements of its wind.

The May 3, 1999, tornado near Bridge Creek, Oklahoma, was rated F5. Tornado F-scale ratings follow the damage a storm leaves behind, not radar measurements of its wind.

Your body is made of roughly 37 trillion cells. That is the estimate a 2013 study reached by adding up cell counts organ by organ and cell type by cell type.

Your body is made of roughly 37 trillion cells. That is the estimate a 2013 study reached by adding up cell counts organ by organ and cell type by cell type.

Neptune is the windiest world in our solar system. Its winds blow clouds of frozen methane at more than 1,200 miles per hour, NASA says.

Neptune is the windiest world in our solar system. Its winds blow clouds of frozen methane at more than 1,200 miles per hour, NASA says.

Titanic's wreck lies about 12,000 feet down, more than 350 nautical miles off Newfoundland. It sat undiscovered for 73 years, until September 1, 1985.

Titanic's wreck lies about 12,000 feet down, more than 350 nautical miles off Newfoundland. It sat undiscovered for 73 years, until September 1, 1985.

The Golden Gate Bridge's two main cables hold 80,000 miles of steel wire. Each cable is made of 27,572 separate wires bundled together.

The Golden Gate Bridge's two main cables hold 80,000 miles of steel wire. Each cable is made of 27,572 separate wires bundled together.

Saturn's moon Enceladus is only about 310 miles wide, yet it shoots jets of water vapor and ice into space from a salty ocean hidden under its icy shell.

Saturn's moon Enceladus is only about 310 miles wide, yet it shoots jets of water vapor and ice into space from a salty ocean hidden under its icy shell.

Yellowstone is the only place in the U.S. where bison have lived continuously since prehistoric times. By 1902, poachers had cut its herd to about two dozen animals.

Yellowstone is the only place in the U.S. where bison have lived continuously since prehistoric times. By 1902, poachers had cut its herd to about two dozen animals.

In 29 years, 36 men tried to escape Alcatraz in 14 separate attempts. Nearly all were caught or died, but the fate of 3 men who vanished in June 1962 is still a mystery.

In 29 years, 36 men tried to escape Alcatraz in 14 separate attempts. Nearly all were caught or died, but the fate of 3 men who vanished in June 1962 is still a mystery.

On Mars, sunsets glow blue. NASA's Curiosity rover photographed its first color sunset there on April 15, 2015, from inside Gale Crater.

On Mars, sunsets glow blue. NASA's Curiosity rover photographed its first color sunset there on April 15, 2015, from inside Gale Crater.

In May 1927 Charles Lindbergh flew alone from New York to Paris, 3,610 miles in 33.5 hours. About 100,000 people were waiting when he landed.

In May 1927 Charles Lindbergh flew alone from New York to Paris, 3,610 miles in 33.5 hours. About 100,000 people were waiting when he landed.

Antarctica's and Greenland's ice sheets hold over 68% of Earth's fresh water. If Antarctica's ice melted completely, sea level would rise about 190 feet.

Antarctica's and Greenland's ice sheets hold over 68% of Earth's fresh water. If Antarctica's ice melted completely, sea level would rise about 190 feet.

Sperm whales are the largest toothed whales. Hunting in the dark, they routinely dive 2,000 feet deep and can stay down for 45 minutes.

Sperm whales are the largest toothed whales. Hunting in the dark, they routinely dive 2,000 feet deep and can stay down for 45 minutes.

Saturn's moon Titan has clouds, rain, rivers, lakes and seas, NASA says. But its lakes and seas hold liquid methane and ethane instead of water.

Saturn's moon Titan has clouds, rain, rivers, lakes and seas, NASA says. But its lakes and seas hold liquid methane and ethane instead of water.

The Pony Express carried letters more than 1,800 miles in 10 days, from Missouri to California. It lasted just 18 months before the telegraph replaced it.

The Pony Express carried letters more than 1,800 miles in 10 days, from Missouri to California. It lasted just 18 months before the telegraph replaced it.

The Hoover Dam complex, the dam, powerplant and related works, holds 4.36 million cubic yards of concrete: enough to pave a 16-foot-wide highway from San Francisco to New York.

The Hoover Dam complex, the dam, powerplant and related works, holds 4.36 million cubic yards of concrete: enough to pave a 16-foot-wide highway from San Francisco to New York.

The Sun holds about 99.8% of all the mass in our solar system. Every planet, moon, asteroid and comet put together shares roughly the last 0.2%.

The Sun holds about 99.8% of all the mass in our solar system. Every planet, moon, asteroid and comet put together shares roughly the last 0.2%.

On August 24, 1814, British troops spent nearly an hour eating and taking souvenirs inside the White House, then set it on fire. Only a roofless stone shell was left.

On August 24, 1814, British troops spent nearly an hour eating and taking souvenirs inside the White House, then set it on fire. Only a roofless stone shell was left.

Astronauts grow up to 3 percent taller during long missions on the International Space Station, NASA says, then shrink back to normal once they return to Earth.

Astronauts grow up to 3 percent taller during long missions on the International Space Station, NASA says, then shrink back to normal once they return to Earth.

About 90% of Mount Rushmore was carved with dynamite. Each workday, carvers climbed 700 stairs to the top, then were lowered over the 500-foot face on steel cables.

About 90% of Mount Rushmore was carved with dynamite. Each workday, carvers climbed 700 stairs to the top, then were lowered over the 500-foot face on steel cables.

By volume, the General Sherman sequoia is the largest tree on Earth: an estimated 52,500 cubic feet of wood. Its trunk alone weighs nearly 1,400 tons.

By volume, the General Sherman sequoia is the largest tree on Earth: an estimated 52,500 cubic feet of wood. Its trunk alone weighs nearly 1,400 tons.

A lightning bolt can heat the air around it to 50,000°F, about 5 times hotter than the surface of the Sun, according to the National Weather Service.

A lightning bolt can heat the air around it to 50,000°F, about 5 times hotter than the surface of the Sun, according to the National Weather Service.

The earliest recognizable recording of a human voice was made on April 9, 1860, as a line scratched into soot on paper. It wasn't turned back into sound until 2008.

The earliest recognizable recording of a human voice was made on April 9, 1860, as a line scratched into soot on paper. It wasn't turned back into sound until 2008.

The Moon is drifting away from Earth by about 3.8 centimeters a year. We know because scientists bounce lasers off mirrors that Apollo 11 astronauts left there in 1969.

The Moon is drifting away from Earth by about 3.8 centimeters a year. We know because scientists bounce lasers off mirrors that Apollo 11 astronauts left there in 1969.

In 1854, work on the Washington Monument stalled at 156 feet. It stood unfinished for over two decades, and marble from 3 quarries still shows slightly different colors.

In 1854, work on the Washington Monument stalled at 156 feet. It stood unfinished for over two decades, and marble from 3 quarries still shows slightly different colors.

The blue whale is the largest animal known to have lived on Earth. In the Antarctic, NOAA says, blue whales can reach about 110 feet and weigh more than 330,000 pounds.

The blue whale is the largest animal known to have lived on Earth. In the Antarctic, NOAA says, blue whales can reach about 110 feet and weigh more than 330,000 pounds.

Measured from its base deep under the Pacific, Hawaii's Mauna Kea rises more than 33,500 feet. By that measure, NOAA says, it is taller than Mount Everest.

Measured from its base deep under the Pacific, Hawaii's Mauna Kea rises more than 33,500 feet. By that measure, NOAA says, it is taller than Mount Everest.

Mark Twain was born in 1835, when Halley's Comet appeared, and said he expected to go out with it. The comet returned in 1910, and Twain died one day after its closest approach to the Sun.

Mark Twain was born in 1835, when Halley's Comet appeared, and said he expected to go out with it. The comet returned in 1910, and Twain died one day after its closest approach to the Sun.

The official world record for the hottest air temperature, 134°F, was set at Furnace Creek in Death Valley, California, on July 10, 1913, the National Park Service says.

The official world record for the hottest air temperature, 134°F, was set at Furnace Creek in Death Valley, California, on July 10, 1913, the National Park Service says.

The famous Blue Marble photo of Earth was taken by the Apollo 17 crew on the way to the Moon, and it was the first Apollo view that could capture the South Pole's ice cap.

The famous Blue Marble photo of Earth was taken by the Apollo 17 crew on the way to the Moon, and it was the first Apollo view that could capture the South Pole's ice cap.

Abraham Lincoln is the only U.S. president ever granted a patent. U.S. Patent No. 6469, issued in 1849, covered a way to lift boats over shallow water.

Abraham Lincoln is the only U.S. president ever granted a patent. U.S. Patent No. 6469, issued in 1849, covered a way to lift boats over shallow water.

Both Voyager spacecraft carry a Golden Record meant for any alien who finds it: 115 images, sounds of Earth, music, and spoken greetings in 55 languages.

Both Voyager spacecraft carry a Golden Record meant for any alien who finds it: 115 images, sounds of Earth, music, and spoken greetings in 55 languages.

The Empire State Building went up in just 410 days and was finished in 1931. Its antenna gets hit by lightning about 25 times a year.

The Empire State Building went up in just 410 days and was finished in 1931. Its antenna gets hit by lightning about 25 times a year.

Jupiter's Great Red Spot has been tracked since 1831. A 2024 study says it is probably not the spot astronomers first saw in 1665, which vanished from records after 1713.

Jupiter's Great Red Spot has been tracked since 1831. A 2024 study says it is probably not the spot astronomers first saw in 1665, which vanished from records after 1713.

Leatherbacks are the largest turtles on Earth, and they can dive about 4,000 feet deep. Some swim more than 10,000 miles a year, NOAA says.

Leatherbacks are the largest turtles on Earth, and they can dive about 4,000 feet deep. Some swim more than 10,000 miles a year, NOAA says.

A 1.3-millimeter spacing error in a test instrument left the Hubble Space Telescope's main mirror the wrong shape. Astronauts fixed its vision in December 1993.

A 1.3-millimeter spacing error in a test instrument left the Hubble Space Telescope's main mirror the wrong shape. Astronauts fixed its vision in December 1993.

Yellowstone has more than 10,000 hot springs, geysers, mudpots and steam vents. More than 500 of them are geysers, the National Park Service says.

Yellowstone has more than 10,000 hot springs, geysers, mudpots and steam vents. More than 500 of them are geysers, the National Park Service says.

The biggest hailstone ever found in the U.S. fell in Vivian, South Dakota, on July 23, 2010: 8 inches across and nearly 2 pounds.

The biggest hailstone ever found in the U.S. fell in Vivian, South Dakota, on July 23, 2010: 8 inches across and nearly 2 pounds.

On December 17, 1903, Orville Wright flew the Wright Flyer 120 feet in 12 seconds. Later that same morning, Wilbur flew it 852 feet in 59 seconds.

On December 17, 1903, Orville Wright flew the Wright Flyer 120 feet in 12 seconds. Later that same morning, Wilbur flew it 852 feet in 59 seconds.

The Slinky's first sale was 400 units in 90 minutes at Gimbels in Philadelphia on November 27, 1945 — a dollar each, all gone.

The Slinky's first sale was 400 units in 90 minutes at Gimbels in Philadelphia on November 27, 1945 — a dollar each, all gone.

In a 10-week Durham University study, 12 blind and 14 sighted adults learned to echolocate by tongue clicks, and both groups improved across the echolocation tasks.

In a 10-week Durham University study, 12 blind and 14 sighted adults learned to echolocate by tongue clicks, and both groups improved across the echolocation tasks.

A prime number discovered on December 26, 2017, has 23,249,425 digits. When it was announced in January 2018, it was only the 50th Mersenne prime ever found.

A prime number discovered on December 26, 2017, has 23,249,425 digits. When it was announced in January 2018, it was only the 50th Mersenne prime ever found.

For more than 70 years, astronomers assumed Mercury kept one face to the Sun. In 1965, radar measurements from Arecibo showed it spins about once every 59 days.

For more than 70 years, astronomers assumed Mercury kept one face to the Sun. In 1965, radar measurements from Arecibo showed it spins about once every 59 days.

Walter Hunt invented the safety pin in 1849, then sold every right to it for $400 — and never earned another cent.

Walter Hunt invented the safety pin in 1849, then sold every right to it for $400 — and never earned another cent.

Prince's $100 million Warner deal paid its $10 million per album only if the previous album sold 5 million copies — a threshold he rarely hit.

Prince's $100 million Warner deal paid its $10 million per album only if the previous album sold 5 million copies — a threshold he rarely hit.

In 1993 Prince mailed 3.5-inch floppy disks to newsrooms because his new name was a symbol no keyboard on Earth could type.

In 1993 Prince mailed 3.5-inch floppy disks to newsrooms because his new name was a symbol no keyboard on Earth could type.

The symbol Prince renamed himself in 1993 held 4 real U.S. federal trademarks — one registered Feb. 22, 1994, for records and videos.

The symbol Prince renamed himself in 1993 held 4 real U.S. federal trademarks — one registered Feb. 22, 1994, for records and videos.

For 7 years, Prince performed under a name no one could pronounce — an unspeakable symbol he unveiled in 1993 and dropped in 2000.

For 7 years, Prince performed under a name no one could pronounce — an unspeakable symbol he unveiled in 1993 and dropped in 2000.

In a proposed 2021 reconstruction, a surviving 63-tooth bronze gear is the key to how the ancient Antikythera mechanism may have modeled Venus's 462-year cycle.

In a proposed 2021 reconstruction, a surviving 63-tooth bronze gear is the key to how the ancient Antikythera mechanism may have modeled Venus's 462-year cycle.

The 1947 moth taped into Harvard's logbook didn't coin 'bug'—Thomas Edison used it for hidden defects in the 1870s, 70 years earlier.

The 1947 moth taped into Harvard's logbook didn't coin 'bug'—Thomas Edison used it for hidden defects in the 1870s, 70 years earlier.

The most abundant vertebrate on Earth may be a finger-length deep-sea fish you've never seen: Cyclothone, estimated to number in the hundreds of trillions to quadrillions.

The most abundant vertebrate on Earth may be a finger-length deep-sea fish you've never seen: Cyclothone, estimated to number in the hundreds of trillions to quadrillions.

The largest known glowing vertebrate is the kitefin shark, which grows to nearly 6 feet. Its blue-green belly light may help hide its shadow from animals below.

The largest known glowing vertebrate is the kitefin shark, which grows to nearly 6 feet. Its blue-green belly light may help hide its shadow from animals below.

The glowing bacteria in an anglerfish's lure have genomes about 50% smaller than their free-living relatives, and they have lost most of their amino-acid-making genes.

The glowing bacteria in an anglerfish's lure have genomes about 50% smaller than their free-living relatives, and they have lost most of their amino-acid-making genes.

Off Monterey Bay, researchers counted 350,000 sea animals from the surface to 4,000 meters. 76% of them can make their own light.

Off Monterey Bay, researchers counted 350,000 sea animals from the surface to 4,000 meters. 76% of them can make their own light.

On February 14, 1876, Elisha Gray never filed a telephone patent — just a cheaper 'caveat,' a claims-free note. Bell filed the real thing hours earlier.

On February 14, 1876, Elisha Gray never filed a telephone patent — just a cheaper 'caveat,' a claims-free note. Bell filed the real thing hours earlier.

In 1994 Hubble weighed M87's black hole at 2.4 billion Suns. In 2019 a photo of its shadow said 6.5 billion — 2.7 times heavier.

In 1994 Hubble weighed M87's black hole at 2.4 billion Suns. In 2019 a photo of its shadow said 6.5 billion — 2.7 times heavier.

Bruno Mars' "Just the Way You Are," his very first single from 2010, is now the highest-certified song in U.S. history: 21 million units.

Bruno Mars' "Just the Way You Are," his very first single from 2010, is now the highest-certified song in U.S. history: 21 million units.

Before the platinum records, Tupac Shakur handwrote 72 poems as a teenager — printed in his own handwriting in 1999.

Before the platinum records, Tupac Shakur handwrote 72 poems as a teenager — printed in his own handwriting in 1999.

Prince wrote 'Nothing Compares 2 U' and taped a solo demo on July 15, 1984 — six years before Sinéad O'Connor took it to No. 1.

Prince wrote 'Nothing Compares 2 U' and taped a solo demo on July 15, 1984 — six years before Sinéad O'Connor took it to No. 1.

Dolly Parton turned Elvis away in 1974, keeping 'I Will Always Love You' — a choice worth over $10 million once Whitney Houston sang it.

Dolly Parton turned Elvis away in 1974, keeping 'I Will Always Love You' — a choice worth over $10 million once Whitney Houston sang it.

The 'Barbenheimer' weekend of July 21-23, 2023 pushed North American theaters past $300M — the 4th-biggest box office weekend ever at the time.

The 'Barbenheimer' weekend of July 21-23, 2023 pushed North American theaters past $300M — the 4th-biggest box office weekend ever at the time.

In February 2024, a StorageReview server finished computing pi to 105 trillion digits after 75 days. The very last one is a 6.

In February 2024, a StorageReview server finished computing pi to 105 trillion digits after 75 days. The very last one is a 6.

The famous "September 3, 1928" date for penicillin's discovery appears in no document from 1928 — Fleming's first notebook mention is dated October 30.

The famous "September 3, 1928" date for penicillin's discovery appears in no document from 1928 — Fleming's first notebook mention is dated October 30.

The typewriter's 1868 patent, No. 79,265, names three inventors from Milwaukee. The machine sold under two of their names — Sholes and Glidden.

The typewriter's 1868 patent, No. 79,265, names three inventors from Milwaukee. The machine sold under two of their names — Sholes and Glidden.

Magna Carta had 63 clauses in 1215. Only 3 are still law in England and Wales today — and the rest were quietly repealed.

Magna Carta had 63 clauses in 1215. Only 3 are still law in England and Wales today — and the rest were quietly repealed.

On September 27, 1822, Champollion announced he'd cracked hieroglyphs — and his rival Thomas Young sat in the audience, watching him win.

On September 27, 1822, Champollion announced he'd cracked hieroglyphs — and his rival Thomas Young sat in the audience, watching him win.

A wild blue whale's heart slowed to 2 beats per minute on a deep dive off Monterey Bay in 2019 — the first heartbeat ever recorded in the species.

A wild blue whale's heart slowed to 2 beats per minute on a deep dive off Monterey Bay in 2019 — the first heartbeat ever recorded in the species.

The Etruscan shrew weighs 2 grams and its heart once hit 1,511 beats per minute — the fastest heartbeat ever recorded in any warm-blooded animal.

The Etruscan shrew weighs 2 grams and its heart once hit 1,511 beats per minute — the fastest heartbeat ever recorded in any warm-blooded animal.

Real sneeze droplets travel just 2 to 5.4 m/s — about walking speed — not the 100 mph figure that's been repeated for decades.

Real sneeze droplets travel just 2 to 5.4 m/s — about walking speed — not the 100 mph figure that's been repeated for decades.

The green carpet smothering the Mediterranean seafloor is a single cell — one alga that grows 3.2 cm a day and 5,000 fronds per square meter.

The green carpet smothering the Mediterranean seafloor is a single cell — one alga that grows 3.2 cm a day and 5,000 fronds per square meter.

A honeybee dancing 40° left of straight-up on the dark comb is telling her hive the food sits 40° left of the sun — a 1:1 angle swap.

A honeybee dancing 40° left of straight-up on the dark comb is telling her hive the food sits 40° left of the sun — a 1:1 angle swap.

One lake in Siberia holds nearly 20% of all the unfrozen freshwater on Earth — more than all five Great Lakes combined.

One lake in Siberia holds nearly 20% of all the unfrozen freshwater on Earth — more than all five Great Lakes combined.

On Jan 1, 1995, a 25.6 m wave hit Norway's Draupner platform — and dented equipment 18.5 m up, exactly where its laser said the crest peaked.

On Jan 1, 1995, a 25.6 m wave hit Norway's Draupner platform — and dented equipment 18.5 m up, exactly where its laser said the crest peaked.

'Oumuamua, the first known visitor from another star, is about 10 times longer than it is wide — more elongated than any asteroid or comet in our solar system.

'Oumuamua, the first known visitor from another star, is about 10 times longer than it is wide — more elongated than any asteroid or comet in our solar system.

On December 24, 2024, NASA's Parker Solar Probe hit 430,000 mph — fast enough to fly from New York to Tokyo in under a minute.

On December 24, 2024, NASA's Parker Solar Probe hit 430,000 mph — fast enough to fly from New York to Tokyo in under a minute.

Nicolas Cage acted as 'Cage' for over 40 years, but didn't legally change his name from Coppola until 2025 — at age 61.

Nicolas Cage acted as 'Cage' for over 40 years, but didn't legally change his name from Coppola until 2025 — at age 61.

Elton John legally erased the name Reginald Kenneth Dwight on January 11, 1972 — the deed poll still sits in Britain's National Archives.

Elton John legally erased the name Reginald Kenneth Dwight on January 11, 1972 — the deed poll still sits in Britain's National Archives.

The Phantom of the Opera played its 13,981st and final Broadway show on April 16, 2023 — the longest run in Broadway history.

The Phantom of the Opera played its 13,981st and final Broadway show on April 16, 2023 — the longest run in Broadway history.

Red Notice beat Netflix's all-time film record in 17 days—328.8 million hours viewed by Nov. 28, 2021, toppling Bird Box.

Red Notice beat Netflix's all-time film record in 17 days—328.8 million hours viewed by Nov. 28, 2021, toppling Bird Box.

The largest known twin prime pair each has 388,342 digits — printed at normal size, one number would run over 150 pages.

The largest known twin prime pair each has 388,342 digits — printed at normal size, one number would run over 150 pages.

Gordon Gould coined the word 'laser' in 1957, but the U.S. Patent Office made him wait until 1977 to hold his first laser patent.

Gordon Gould coined the word 'laser' in 1957, but the U.S. Patent Office made him wait until 1977 to hold his first laser patent.

The rechargeable lithium battery in your phone was patented in 1977 by Exxon — the oil company — with inventor M. Stanley Whittingham.

The rechargeable lithium battery in your phone was patented in 1977 by Exxon — the oil company — with inventor M. Stanley Whittingham.

The Antikythera Mechanism, the world's first known computer, survives as just 30 corroded bronze gears—27 of them crammed into a single fragment.

The Antikythera Mechanism, the world's first known computer, survives as just 30 corroded bronze gears—27 of them crammed into a single fragment.

Willie Jones survived a core body temperature of 46.5°C (115.7°F) in 1980 — the highest ever recorded in a survivor, and even that was an underestimate.

Willie Jones survived a core body temperature of 46.5°C (115.7°F) in 1980 — the highest ever recorded in a survivor, and even that was an underestimate.

Every bitter flavor you've ever tasted is read by about 25 genes — packed into just 3 spots on your chromosomes.

Every bitter flavor you've ever tasted is read by about 25 genes — packed into just 3 spots on your chromosomes.

A falcon named Frightful hit 242 mph in a 1999 dive from three miles up—faster than any other animal ever clocked on Earth.

A falcon named Frightful hit 242 mph in a 1999 dive from three miles up—faster than any other animal ever clocked on Earth.

In 1964 a grad student cut down a bristlecone pine to study it—then counted 4,844 rings and realized he'd killed the oldest tree on Earth.

In 1964 a grad student cut down a bristlecone pine to study it—then counted 4,844 rings and realized he'd killed the oldest tree on Earth.

The Amazon dumps enough fresh water into the sea in ONE day to supply New York City for over 9 years — per the USGS.

The Amazon dumps enough fresh water into the sea in ONE day to supply New York City for over 9 years — per the USGS.

The Great Barrier Reef runs 2,300 km — the same distance as the entire US west coast, from Vancouver all the way down to the Mexican border.

The Great Barrier Reef runs 2,300 km — the same distance as the entire US west coast, from Vancouver all the way down to the Mexican border.

Saturn and Jupiter traded the title of 'most moons' three times in four years, ending with Saturn's 145 in May 2023.

Saturn and Jupiter traded the title of 'most moons' three times in four years, ending with Saturn's 145 in May 2023.

The black hole at the Milky Way's center spans 51.8 microarcseconds in our sky — the width of a donut on the Moon seen from Earth.

The black hole at the Milky Way's center spans 51.8 microarcseconds in our sky — the width of a donut on the Moon seen from Earth.

Taylor Swift's Eras Tour grossed $2,077,618,725 — the first concert tour in history to pass $2 billion, across just 149 shows.

Taylor Swift's Eras Tour grossed $2,077,618,725 — the first concert tour in history to pass $2 billion, across just 149 shows.

The world's first feature-length movie premiered in Melbourne on December 26, 1906 — an hour-long film about outlaw Ned Kelly.

The world's first feature-length movie premiered in Melbourne on December 26, 1906 — an hour-long film about outlaw Ned Kelly.

Every Rubik's Cube position — all 43,252,003,274,489,856,000 of them — can be solved in 20 moves or fewer. Zero need 21.

Every Rubik's Cube position — all 43,252,003,274,489,856,000 of them — can be solved in 20 moves or fewer. Zero need 21.

A Rubik's Cube has exactly 43,252,003,274,489,856,000 possible states — but only 1 in 12 of the arrangements you could build by hand can ever be solved.

A Rubik's Cube has exactly 43,252,003,274,489,856,000 possible states — but only 1 in 12 of the arrangements you could build by hand can ever be solved.

The first computer mouse, patented in 1970, had no rolling ball inside—it moved on two metal wheels set at right angles.

The first computer mouse, patented in 1970, had no rolling ball inside—it moved on two metal wheels set at right angles.

Astronauts on the International Space Station watch 16 sunrises and 16 sunsets every single day — one every 90 minutes.

Astronauts on the International Space Station watch 16 sunrises and 16 sunsets every single day — one every 90 minutes.

The Wizard of Oz opens in black-and-white for two full reels — not just the single doorway shot most people remember.

The Wizard of Oz opens in black-and-white for two full reels — not just the single doorway shot most people remember.

The National Archives accepted a 19,795-foot Technicolor print of 'Gone with the Wind' in 1941. A vault fire burned it to nothing in 1978.

The National Archives accepted a 19,795-foot Technicolor print of 'Gone with the Wind' in 1941. A vault fire burned it to nothing in 1978.

Beyonce's halftime show on Christmas 2024 pulled over 27 million US viewers — the peak of the most-streamed NFL day in history.

Beyonce's halftime show on Christmas 2024 pulled over 27 million US viewers — the peak of the most-streamed NFL day in history.

The largest known prime number has 41,024,320 digits — printed at normal size, it would run for over 100 miles.

The largest known prime number has 41,024,320 digits — printed at normal size, it would run for over 100 miles.

The blueprint for the World Wide Web got just three handwritten words from the boss in March 1989: "Vague but exciting."

The blueprint for the World Wide Web got just three handwritten words from the boss in March 1989: "Vague but exciting."

$Oxford carbon-dated three pages of one Indian math manuscript and got three answers 600 years apart: 224–383, 680–779, and 885–993 CE.$

Oxford carbon-dated three pages of one Indian math manuscript and got three answers 600 years apart: 224–383, 680–779, and 885–993 CE.

The shortest war in history was over before 10 a.m.: Britain and Zanzibar fought for roughly 40 minutes on August 27, 1896.

The shortest war in history was over before 10 a.m.: Britain and Zanzibar fought for roughly 40 minutes on August 27, 1896.

The tongue map from your textbook was invented in 1942 by Edwin Boring, who misread a 1901 study that said the opposite.

The tongue map from your textbook was invented in 1942 by Edwin Boring, who misread a 1901 study that said the opposite.

In 2025, a Croatian diver held his breath underwater for 29 minutes 3 seconds — over twice the record set in a California pool in 1959.

In 2025, a Croatian diver held his breath underwater for 29 minutes 3 seconds — over twice the record set in a California pool in 1959.

On June 14, 2025, Vitomir Maričić lay underwater at a hotel pool and did not breathe for 29 minutes and 3 seconds.

On June 14, 2025, Vitomir Maričić lay underwater at a hotel pool and did not breathe for 29 minutes and 3 seconds.

Octopus blood carries oxygen on copper, not iron — and a 2001 study showed it runs colorless until oxygen turns it blue.

Octopus blood carries oxygen on copper, not iron — and a 2001 study showed it runs colorless until oxygen turns it blue.

Cut every nerve from an octopus brain to its hearts, and all three keep beating — in 1980 M. J. Wells found they run without the brain.

Cut every nerve from an octopus brain to its hearts, and all three keep beating — in 1980 M. J. Wells found they run without the brain.

Greg Whipple mapped 400 acres of dying trees in Oregon in 1988. Genetic testing later proved it was ONE fungus spanning 2,385 acres.

Greg Whipple mapped 400 acres of dying trees in Oregon in 1988. Genetic testing later proved it was ONE fungus spanning 2,385 acres.

The largest living thing on Earth is a fungus in Oregon: one Armillaria ostoyae covering 2,385 acres — 3.7 square miles.

The largest living thing on Earth is a fungus in Oregon: one Armillaria ostoyae covering 2,385 acres — 3.7 square miles.

The deepest point of Challenger Deep isn't 10,994 m — that's a 2011 press figure. The peer-reviewed 2022 survey measured 10,924 m.

The deepest point of Challenger Deep isn't 10,994 m — that's a 2011 press figure. The peer-reviewed 2022 survey measured 10,924 m.

Satellites clocked −135.8°F on the East Antarctic Plateau in 2010 — colder than any thermometer has ever officially measured on Earth.

Satellites clocked −135.8°F on the East Antarctic Plateau in 2010 — colder than any thermometer has ever officially measured on Earth.

The coldest air ever measured on Earth was -128.6°F, recorded by thermometer at Vostok Station, Antarctica on July 21, 1983.

The coldest air ever measured on Earth was -128.6°F, recorded by thermometer at Vostok Station, Antarctica on July 21, 1983.

The James Webb telescope doesn't orbit Earth. It circles a point in empty space 1 million miles away, on the far side from the Sun.

The James Webb telescope doesn't orbit Earth. It circles a point in empty space 1 million miles away, on the far side from the Sun.

A radio command to Voyager 1 now takes over 23 hours to arrive — on Nov. 18, 2026 it hits exactly 24, a full light-day away.

A radio command to Voyager 1 now takes over 23 hours to arrive — on Nov. 18, 2026 it hits exactly 24, a full light-day away.

On Nov. 18, 2026, at 2:16:07 a.m. PST, Voyager 1 becomes the first thing humans built to sit one full light-day from Earth.

On Nov. 18, 2026, at 2:16:07 a.m. PST, Voyager 1 becomes the first thing humans built to sit one full light-day from Earth.

Near El Nido, California, the ground itself sank 10.6 inches in a single year — one of the fastest land collapses ever measured in the San Joaquin Valley.

Near El Nido, California, the ground itself sank 10.6 inches in a single year — one of the fastest land collapses ever measured in the San Joaquin Valley.

While the world's glaciers shrank, Alaska's Taku Glacier grew — gaining mass and advancing every year from 1946 to 2018.

While the world's glaciers shrank, Alaska's Taku Glacier grew — gaining mass and advancing every year from 1946 to 2018.

A 100-km stretch of the San Andreas Fault slides past itself over 30 mm every year — silently, without a single earthquake.

A 100-km stretch of the San Andreas Fault slides past itself over 30 mm every year — silently, without a single earthquake.

Velcro was patented in Switzerland on March 16, 1954 — under Patent No. 295,638, filed by George de Mestral in 1951 after a walk with his dog.

Velcro was patented in Switzerland on March 16, 1954 — under Patent No. 295,638, filed by George de Mestral in 1951 after a walk with his dog.

Pi hits six 9s in a row at digit 762 — then waits 1.72 million more digits before a seventh 9 ever joins the run.

Pi hits six 9s in a row at digit 762 — then waits 1.72 million more digits before a seventh 9 ever joins the run.

The shortest song to ever hit No. 1 on the Billboard Hot 100 lasts just 98 seconds: 'Stay,' which topped the chart on November 21, 1960.

The shortest song to ever hit No. 1 on the Billboard Hot 100 lasts just 98 seconds: 'Stay,' which topped the chart on November 21, 1960.

Jack Black's 'Steve's Lava Chicken' runs just 34 seconds — the shortest song ever to enter the Billboard Hot 100 since 1958.

Jack Black's 'Steve's Lava Chicken' runs just 34 seconds — the shortest song ever to enter the Billboard Hot 100 since 1958.

Spider-Man: Brand New Day made $360 million in its first 3 days in 2026 — the biggest domestic opening weekend ever, past Avengers: Endgame.

Greta Gerwig's Barbie opened to $162 million in July 2023 — the biggest opening weekend ever for a movie directed by a woman.

Greta Gerwig's Barbie opened to $162 million in July 2023 — the biggest opening weekend ever for a movie directed by a woman.

"Deadpool & Wolverine" opened to $205 million in July 2024 — the biggest R-rated debut ever, nearly doubling the original Deadpool's record.

"Deadpool & Wolverine" opened to $205 million in July 2024 — the biggest R-rated debut ever, nearly doubling the original Deadpool's record.

Tom Cruise made 43 movies before one opened above $100 million. "Top Gun: Maverick" debuted to $126.7 million in May 2022 — his first.

Tom Cruise made 43 movies before one opened above $100 million. "Top Gun: Maverick" debuted to $126.7 million in May 2022 — his first.

Fred Ott's Sneeze wasn't the first copyrighted movie. In 2022, scholar Claudy Op den Kamp found an Edison film registered in 1893 that beat it.

Fred Ott's Sneeze wasn't the first copyrighted movie. In 2022, scholar Claudy Op den Kamp found an Edison film registered in 1893 that beat it.

America's first motion picture, filmed in 1894, was copyrighted as a photograph — the law had no word for "movie" yet.

America's first motion picture, filmed in 1894, was copyrighted as a photograph — the law had no word for "movie" yet.

Sharks were hunting Earth's oceans 450 million years ago — 65 million years before the planet grew its first tree.

Sharks were hunting Earth's oceans 450 million years ago — 65 million years before the planet grew its first tree.

A UCLA-Ewha reactor turns unsorted PET, PE and PP trash into hydrogen over 90% pure — and traps most of the carbon so it never reaches the sky.

A UCLA-Ewha reactor turns unsorted PET, PE and PP trash into hydrogen over 90% pure — and traps most of the carbon so it never reaches the sky.

A pinhead-sized clump of human brain tissue has stayed alive in a Harvard lab for more than 5 years — the longest-living organ ever grown outside a body.

A pinhead-sized clump of human brain tissue has stayed alive in a Harvard lab for more than 5 years — the longest-living organ ever grown outside a body.

Native bacteria from a flooded uranium mine pulled 95% of dissolved uranium out of the water in 130 days — fed only glycerol.

Native bacteria from a flooded uranium mine pulled 95% of dissolved uranium out of the water in 130 days — fed only glycerol.

Cloud-9 is a galaxy that never turned on: a gas cloud near Messier 94 with zero stars, held together by dark matter alone.

Cloud-9 is a galaxy that never turned on: a gas cloud near Messier 94 with zero stars, held together by dark matter alone.

Omega Centauri should hold 10,000 stellar-mass black holes. Until July 2026, astronomers had found exactly zero of them.

Omega Centauri should hold 10,000 stellar-mass black holes. Until July 2026, astronomers had found exactly zero of them.

GJ 3378 b, 25 light-years away, gets 90% of the sunlight Earth does — and it may be a rocky world in the habitable zone.

GJ 3378 b, 25 light-years away, gets 90% of the sunlight Earth does — and it may be a rocky world in the habitable zone.

A SpaceX Falcon 9 upper stage slammed into the Moon on August 5, 2026, gouging a fresh 18-meter crater near the Einstein crater.

A SpaceX Falcon 9 upper stage slammed into the Moon on August 5, 2026, gouging a fresh 18-meter crater near the Einstein crater.

A neutron star is just 12 miles across—the size of a city—yet one teaspoon of it would weigh a billion tons on Earth.

A neutron star is just 12 miles across—the size of a city—yet one teaspoon of it would weigh a billion tons on Earth.

Saturn is the only planet in our solar system less dense than water — 0.687 g/cm³ means it would float in a big enough bathtub.

Saturn is the only planet in our solar system less dense than water — 0.687 g/cm³ means it would float in a big enough bathtub.

Venus takes 243 Earth days to spin once—but only 225 to orbit the Sun. It's the one planet whose day outlasts its year.

Venus takes 243 Earth days to spin once—but only 225 to orbit the Sun. It's the one planet whose day outlasts its year.

Every wild Southern Resident killer whale on Earth was counted in July 2025. The total came to 74 animals, in three families.

Every wild Southern Resident killer whale on Earth was counted in July 2025. The total came to 74 animals, in three families.

Each killer whale pod off British Columbia speaks its own dialect of 7 to 17 calls that stays fixed for over 25 years.

Each killer whale pod off British Columbia speaks its own dialect of 7 to 17 calls that stays fixed for over 25 years.

Two male orcas, Port and Starboard, killed five great white sharks off South Africa in 2017 — and ate only the livers.

Two male orcas, Port and Starboard, killed five great white sharks off South Africa in 2017 — and ate only the livers.

When an orca grandmother dies, her grandcalves are 4.5x more likely to die within 2 years — even when salmon is plentiful.

When an orca grandmother dies, her grandcalves are 4.5x more likely to die within 2 years — even when salmon is plentiful.

A tiger named Jaipur weighed 423 kg — 932 lb, heavier than a grand piano, the largest tiger ever recorded in captivity.

A tiger named Jaipur weighed 423 kg — 932 lb, heavier than a grand piano, the largest tiger ever recorded in captivity.

A tiger will swim 5 miles across an open lake just to escape biting flies — the Smithsonian says they cross that easily.

A tiger will swim 5 miles across an open lake just to escape biting flies — the Smithsonian says they cross that easily.

In 2010 only about 3,200 wild tigers remained on Earth. By July 2023 the count had climbed back to roughly 5,574.

In 2010 only about 3,200 wild tigers remained on Earth. By July 2023 the count had climbed back to roughly 5,574.

Tiger stripes are as unique as fingerprints — software identified 298 individual tigers with 95% accuracy, even 7 years apart.

Tiger stripes are as unique as fingerprints — software identified 298 individual tigers with 95% accuracy, even 7 years apart.

Your skin emits visible light right now, peaking around 4 p.m. — but it's 1,000 times dimmer than your eyes can ever detect.

Your skin emits visible light right now, peaking around 4 p.m. — but it's 1,000 times dimmer than your eyes can ever detect.

In 2016, Rockefeller researchers found the human eye can register a single photon — one particle of light, the smallest amount physics allows.

In 2016, Rockefeller researchers found the human eye can register a single photon — one particle of light, the smallest amount physics allows.

The oldest written customer complaint on Earth is 3,770 years old: a furious Babylonian named Nanni raging at merchant Ea-nasir over bad copper.

The oldest written customer complaint on Earth is 3,770 years old: a furious Babylonian named Nanni raging at merchant Ea-nasir over bad copper.

The fax machine was patented in 1843 — 33 years before the telephone. Alexander Bain's facsimile design beat Bell's phone by three decades.

The fax machine was patented in 1843 — 33 years before the telephone. Alexander Bain's facsimile design beat Bell's phone by three decades.

This 106-acre forest of 47,000 aspens in Utah isn't a forest. It's one tree, named Pando — a single organism weighing 13 million pounds.

This 106-acre forest of 47,000 aspens in Utah isn't a forest. It's one tree, named Pando — a single organism weighing 13 million pounds.

The Amazon rainforest is fed by the Sahara: 27.7 million tons of desert dust drift across the Atlantic and settle on it every year.

The Amazon rainforest is fed by the Sahara: 27.7 million tons of desert dust drift across the Atlantic and settle on it every year.

Saturn's rings stretch 175,000 miles across, yet the main rings are just 30 feet thick — thinner than a three-story house is tall.

Saturn's rings stretch 175,000 miles across, yet the main rings are just 30 feet thick — thinner than a three-story house is tall.

Averaged across time, Earth's closest planet isn't Venus — it's Mercury, at a mean 1.04 AU versus Venus's 1.14.

Averaged across time, Earth's closest planet isn't Venus — it's Mercury, at a mean 1.04 AU versus Venus's 1.14.

The northern lights aren't paint or magic — they're a collision. Particles hurled off the Sun slam into oxygen and nitrogen 60 miles up, and the sky glows where the atoms take the hit.

The northern lights aren't paint or magic — they're a collision. Particles hurled off the Sun slam into oxygen and nitrogen 60 miles up, and the sky glows where the atoms take the hit.

Antarctica's ice is so heavy it has pressed the bedrock nearly 1 kilometer down into the mantle. Strip the ice away, and the continent would keep rising for 10,000+ years.

Antarctica's ice is so heavy it has pressed the bedrock nearly 1 kilometer down into the mantle. Strip the ice away, and the continent would keep rising for 10,000+ years.

Roman piers in the Bay of Naples are stronger now than the day they were poured — seawater reacts with the volcanic ash inside and grows crystals that knit the cracks shut.

Roman piers in the Bay of Naples are stronger now than the day they were poured — seawater reacts with the volcanic ash inside and grows crystals that knit the cracks shut.