Most meteorites formed very early in the development of our solar system about 4.3 - 4.7 billion years ago.
Meteorites are solid extra-terrestrial material (rock or iron)that survived passing through the Earth's atmosphere and impacted on Earth.
Most meteorites are probably fragments from the asteroid belt that lies between Mars and Jupiter.
A small number of rare meteorites are fragments of the Moon and Mars.
There are 3 types of meteorite - iron, stony and stony iron.