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11,491 facts. Click any fact to see its full page.
All 11,491
📜 History 1,991
🔬 Science 1,964
🐾 Animals 1,525
🚀 Space 977
🧠 Psychology 893
🌿 Nature 759
💻 Technology 735
🌍 Geography 599
🎭 Culture 581
🫀 Human Body 572
🌊 Ocean 373
💬 Language 245
🍕 Food 199
✨ General 68
✨ Dinosaur 10
The International Space Station has been continuously occupied since November 2, 2000.
The Kepler Space Telescope discovered over 2,600 exoplanets during its nine-year mission.
The first selfie in space was taken by Buzz Aldrin during the Gemini 12 mission in 1966.
The Opportunity rover on Mars was designed for a 90-day mission but operated for over 14 years.
The Soviet space station Mir was continuously occupied for nearly 10 years, from 1989 to 1999.
SpaceX's Falcon 9 was the first orbital-class rocket to successfully land vertically after launch.
The New Horizons probe, which flew past Pluto in 2015, carries a small amount of Clyde Tombaugh's ashes — the astronomer who discovered Pluto.
The Hubble Space Telescope orbits Earth at about 340 miles above the surface and completes one orbit every 95 minutes.
Valentina Tereshkova became the first woman in space in 1963, orbiting Earth 48 times over nearly three days.
The Soviet Union's Venera 7 was the first spacecraft to successfully land on another planet and transmit data back to Earth in 1970.
NASA's Voyager probes are powered by plutonium-238 batteries that will continue operating until around 2025.
The Apollo 11 command module computer had less processing power than a modern USB-C charger.
Buzz Aldrin's mother's maiden name was Moon, making him arguably destined to walk on it.
The first living creatures to orbit the Moon and return safely were two Russian tortoises aboard Zond 5 in 1968.
Ants have colonized every continent on Earth except Antarctica.
Praying mantises are the only insects that can turn their heads 180 degrees.
The wheel spider escapes predators by curling into a ball and cartwheeling down sand dunes at speeds up to 3 feet per second.
Some parasitic wasps can turn caterpillars into bodyguards that protect the wasp's cocoons.
Fireflies produce light through a chemical reaction called bioluminescence with nearly 100% efficiency — almost no energy is wasted as heat.
The Hercules beetle can carry 850 times its own body weight.
A single queen termite can lay up to 30,000 eggs per day.
Walking sticks are so well camouflaged that some species even sway back and forth to mimic a twig moving in the wind.
The death's-head hawkmoth can mimic the scent of honeybees to infiltrate hives and steal honey.
Termites have been building mounds for over 30 million years, and some active mounds are over 4,000 years old.
The fairy fly is the smallest known insect, measuring only 0.005 inches long.
Some species of cicadas emerge from underground only once every 17 years.
Dragonflies have a hunting success rate of about 95%, making them one of the most efficient predators in nature.
The trap-jaw ant can snap its mandibles shut at speeds up to 145 miles per hour, the fastest movement in the animal kingdom.
A flea can accelerate faster than the Space Shuttle during launch.
Dung beetles navigate using the Milky Way, making them the only known insects to orient themselves by the stars.
The bombardier beetle mixes two chemicals in its abdomen that explode out of its rear at boiling temperatures.
Bees can detect and disarm landmines because they can be trained to associate the smell of TNT with sugar water.
The jewel wasp zombifies cockroaches by injecting venom directly into their brains, then leads them to its nest.
Monarch butterflies migrate up to 3,000 miles from Canada to Mexico every autumn, a journey no single butterfly completes twice.
A ladybug can eat up to 5,000 aphids in its lifetime.
The mayfly has the shortest lifespan of any insect — some species live for only 5 minutes as adults.
Mosquitoes are attracted to people who have recently eaten bananas.
The atlas moth has no mouth and cannot eat — it survives on fat stored during its caterpillar stage and lives only about two weeks.
A single bee colony can pollinate 300 million flowers each day.
Your eyes process about 10 million bits of visual data per second.
ASMR, a tingling sensation triggered by specific sounds, activates brain regions associated with reward and emotional arousal.
The vestibular system in your inner ear is responsible for your sense of balance and spatial orientation.
Supertasters have more taste buds than average and experience flavors more intensely, particularly bitter tastes.
Misophonia is a condition where certain sounds, like chewing or breathing, trigger intense emotional reactions.
The brain fills in your blind spot using information from the surrounding visual field, so you never notice the gap.
Humans can detect the smell of rain, called petrichor, at concentrations as low as 5 parts per trillion.
Your sense of smell is 10,000 times more sensitive than your sense of taste.
Infants can see ultraviolet light because their lenses have not yet developed the UV-blocking pigments that adults have.
The Stroop effect shows that reading a color word printed in a different color creates a delay in processing.
Your peripheral vision is better at detecting motion than your central vision.