A micrometeorite is an extraterrestrial particle, ranging in size from 50 µm to 2 mm, usually found on the Earth's surface, and they are essentially micrometeoroids which have survived entry through the Earth's atmosphere.
A micrometeorite is an extraterrestrial particle. A micrometeorite was ranging in size from 50 µm to 2 mm.2 mm was usually found on the Earth's surface. They are essentially micrometeoroids which have survived entry through the Earth's atmosphere.