Meteoroids, Meteors & Meteorites.
They are shooting stars
Meteoroids are big lumps of rock in space.
Meteoroids burn up in the Mesosphere. Even though the Mesosphere is the coldest layer, the meteoroids burn up from getting too cold. Meteoroids are also more commonly known as "shooting stars".
meteoroids
Meteoroids are small, solid, extraterrestrial bodies that hits the earth's atmosphere.
Meteoroids primarily originate from two sources: asteroids and comets. Most meteoroids are fragments of asteroids, particularly from the asteroid belt located between Mars and Jupiter. Comets, when they approach the Sun, shed debris that can also become meteoroids. Additionally, some meteoroids can originate from the Moon or Mars, where impacts have ejected material into space.
We know that there are small meteoroids and dust in space because meteorites (meteoroids that survive the atmosphere and land on Earth) exist, and also because we can see meteoroids as meteors (the light coming from a meteoroid burning up in the atmosphere) in the sky.
Meteoroids are typically composed of rock and metal, such as iron and nickel. Ice can also be present in some meteoroids, particularly those originating from comet fragments.
a circular depression in the ground caused by a meteoroids is called a crater
No.
it was the size of Asia
All planets, both with and without atmospheres, encounter meteoroids. If the planet has an atmosphere then those meteoroids will burn up long before reaching the surface. Those without atmospheres do not have such protection and so the meteoroids strike the surface directly.