The scale of the solar system is so immense that even inside the asteroid belt the average distance between two asteroids is above one million km - or three times the distance between Earth and the Moon.Īsteroid Itokawa, an Apollo asteroid with a length of 500 metres. If you try to envision the asteroid belt don't get fooled by some science fiction films: travelling around in the asteroid belt with your spacecraft doesn't require constant steering in order to avoid crashes with asteroids. The biggest body in the asteroid belt - Ceres - is officially not called an asteroid anymore but a dwarf planet. Even though there are millions of asteroids with sizes up to more than 500 km (like Pallas and Vesta) they are of no danger to the planet Earth. Most of them are in the asteroid belt between Mars and Jupiter. If a comet approaches the Sun it can generate a tail of gas and/or dust.Īn asteroid is a celestial body - composed of rock, metal or a mixture of both - that is orbiting the Sun. The part of a meteoroid or asteroid that survives the passage through our atmosphere and reaches the Earth's surface.Ī smaller celestial body mainly composed of ice and dust. Mostly debris of comets, sometimes debris of asteroids.Ī bright tail of light caused by a meteoroid during its atmospheric flight, also called a shooting star or falling star.Ī very bright meteor (brighter than the planet Venus).Ī fireball that explodes during its atmospheric flight, often with visible fragmentation. Similar to an asteroid, but significantly smaller. What's the difference between asteroids, meteoroids, meteors, meteorites and comets?Ĭontents Summary Table Asteroids Meteoroids and meteors Meteorites CometsĪ celestial body bigger than 10 m orbiting the Sun, mainly between Mars and Jupiter