Tektite/Meteorite

Tektites are gravel-sized pieces of natural glass. They are typically black, green, brown, or grey and are formed from terrestrial debris that is ejected during meteorite impacts.

A meteorite is a rock from outer space that has landed on the surface of a planet or moon. When it enters the atmosphere, it heats up and radiates energy due to friction, pressure, and chemical interactions with atmospheric gases.