Question

prepare a report on stars and solar system, asteroids, meteorites, comets, meteors, phases of moon and constellation.

Answer 1

AsteroidA celestial body bigger than 10 m orbiting the Sun, mainly between Mars and JupiterMeteoroidSimilar to an asteroid, but significantly smaller. Mostly debris of comets, sometimes debris of asteroids.MeteorA bright tail of light caused by a meteoroid during its atmospheric flight, also called a shooting star or falling star.FireballA very bright meteor (brighter than the planet Venus).BolideA fireball that explodes during its atmospheric flight, often with visible fragmentation.MeteoriteThe part of a meteoroid or asteroid that survives the passage through our atmosphere and reaches the Earth's surface.CometA smaller celestial body mainly composed of ice and dust. If a comet approaches the Sun it can generate a tail of gas and/or dust.

Answer 2

An asteroid is a celestial body - composed of rock, metal or a mixture of both - that is orbiting the Sun. Most of them are in the asteroid belt between Mars and Jupiter. 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. The biggest body in the asteroid belt - Ceres - is officially not called an asteroid anymore but a dwarf planet. 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 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.