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11,491 facts. Click any fact to see its full page.
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📜 History 1,991
🔬 Science 1,964
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🚀 Space 977
🧠 Psychology 893
🌿 Nature 759
💻 Technology 735
🌍 Geography 599
🎭 Culture 581
🫀 Human Body 572
🌊 Ocean 373
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✨ General 68
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Çatalhöyük is one of the oldest known urban settlements.
The city of Nineveh was an important Assyrian capital.
The Maya city of Tikal was once a powerful urban center.
Carthage was destroyed by Rome in 146 BCE.
The ancient city of Troy was discovered in modern-day Turkey.
Angkor was once the center of the Khmer Empire.
Petra in Jordan was carved into rose-colored rock cliffs.
Pompeii was buried by the eruption of Mount Vesuvius in 79 CE.
Machu Picchu was built by the Inca and rediscovered in 1911.
Atlantis is a legendary lost city first described by Plato.
Asteroids vary widely in size and composition.
The James Webb Space Telescope observes distant galaxies in infrared light.
Some galaxies appear distorted due to gravitational effects.
The surface of Venus is hidden beneath thick clouds.
Neutron stars can collide and produce heavy elements.
The heliosphere protects the solar system from interstellar radiation.
Exoplanets have been discovered in habitable zones around distant stars.
Some stars collapse into black holes at the end of their life cycle.
The universe is estimated to be about 13.8 billion years old.
The center of the Milky Way contains a supermassive black hole.
Cosmic rays constantly bombard Earth from space.
The Sun occasionally emits powerful solar flares.
The Kuiper Belt contains many icy bodies beyond Neptune.
Time moves more slowly in stronger gravitational fields.
Supernovae can briefly outshine entire galaxies.
The event horizon marks the boundary around a black hole.
Some exoplanets orbit two stars at once.
Black holes can merge and release enormous energy.
The Milky Way and Andromeda galaxies are on a slow collision course.
Magnetars have extremely powerful magnetic fields.
The observable universe spans billions of light-years.
Some pulsars emit beams of radiation like cosmic lighthouses.
Rogue planets drift through space without orbiting a star.
Cosmic microwave background radiation is evidence of the early universe.
Gravitational waves were detected a century after Einstein predicted them.
The expansion of the universe was first observed in the 1920s.
Some galaxies contain supermassive black holes millions of times the Sun’s mass.
Interstellar objects have passed through our solar system.
The Fermi Paradox questions why extraterrestrial life has not been observed.
Gamma-ray bursts are among the most energetic events observed in the universe.
Quasars are extremely bright objects powered by supermassive black holes.
The Oort Cloud is a theoretical shell of icy objects surrounding the solar system.
Some stars appear to dim irregularly for reasons that are still studied.
Black holes can bend light through gravitational lensing.
Neutron stars can spin hundreds of times per second.
The Great Attractor is a gravitational anomaly influencing the motion of galaxies.
Dark energy is thought to drive the accelerating expansion of the universe.
Dark matter is believed to make up most of the universe’s mass but has not been directly observed.
The Wow! signal was a strong radio signal detected in 1977 that has never been fully explained.
Fast radio bursts are powerful millisecond-long radio pulses from distant galaxies.