13 Interesting Facts About Meteorites

A rocky meteoroid needs to be larger than 25 m before it is likely to make it through the earth’s atmosphere and cause any damage. It needs to be larger than a kilometer or two before there will be any global effects.

Before life developed on earth, meteorites that fell on the planet brought reduced phosphorus. This allowed oxidation to phosphates, which provided a mechanism for the generation of DNA and RNA, a precursor for life on earth.