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11,491 facts. Click any fact to see its full page.
All 11,491
๐ History 1,991
๐ฌ Science 1,964
๐พ Animals 1,525
๐ Space 977
๐ง Psychology 893
๐ฟ Nature 759
๐ป Technology 735
๐ Geography 599
๐ญ Culture 581
๐ซ Human Body 572
๐ Ocean 373
๐ฌ Language 245
๐ Food 199
โจ General 68
โจ Dinosaur 10
The Moon is slowly moving away from Earth.
Some bacteria can live inside rocks.
Space is completely silent.
There are planets made of diamond.
Some frogs can freeze and survive.
The human body glows faintly in complete darkness.
There are underwater lakes on Earth.
A day on Venus is longer than its year.
Sharks existed before trees.
Light from distant galaxies shows us the past.
The Tardigrade can survive the vacuum of space.
There are more stars in the universe than grains of sand on Earth.
A teaspoon of neutron star material would weigh billions of tons.
Bananas are naturally radioactive due to potassium.
Some metals explode when they touch water.
The human brain contains about 86 billion neurons.
There are more possible shuffles of a deck of cards than seconds since Earth formed.
Octopuses have three hearts and blue blood.
The Voyager 1 spacecraft is the farthest human-made object from Earth and still communicates with us.
Many coins are made of precious metals such as gold and silver which makes their value higher than face value.
The city of El Dorado was a legendary golden city in South America.
Zhangye once stood along the Silk Road as a trade hub.
The city of Uruk was one of the earliest major cities in history.
Akrotiri was preserved under volcanic ash on Santorini.
The city of Jericho is one of the oldest known walled cities.
Skara Brae is a prehistoric settlement in Scotland.
The ancient city of Susa was a key Persian administrative center.
The Phoenician city of Tyre was built on an island.
The city of Memphis was an early capital of ancient Egypt.
The city of Herculaneum was also buried by Vesuvius.
Ciudad Perdida in Colombia predates Machu Picchu.
The ancient city of Byblos is one of the oldest continuously inhabited places.
The city of Timbuktu was a center of trade and scholarship.
Nan Madol is an ancient city built on artificial islets in Micronesia.
The lost city of Ubar is mentioned in Arabian legends.
Copรกn was an important Maya city in present-day Honduras.
The city of Ani was once a thriving medieval Armenian capital.
The Nabataean civilization built elaborate water systems in Petra.
Leptis Magna was a prominent Roman city in North Africa.
Helike was an ancient Greek city submerged by an earthquake and tsunami.
The city of Hattusa was the capital of the Hittite Empire.
Cahokia was a large pre-Columbian city in North America.
The ancient city of Persepolis was the ceremonial capital of Persia.
Palmyra was an important caravan city in ancient Syria.
The city of Ur was a major Sumerian settlement.
Knossos was a center of the Minoan civilization.
The Indus Valley city of Mohenjo-daro had advanced drainage systems.
Great Zimbabwe was a powerful African city-state.
Teotihuacan was a major city in ancient Mesoamerica.
The city of Babylon was known for its Hanging Gardens.