ocr: METEOROID AI METEOROID IS . an interplanetary piece of rock or dust. Ifa ar meteoroid enters the Earth's atmosphere,it burns up and leaves a brief trail of light in the sky calleda METEOR or shooting star. If any part of a meteomidsuvwesajoumey through the Earth's atmosphere (or through the atmosphere ofany planet or moon) and hits the surface,itis known as a METEORITE.