Meteoroid, Meteor, Meteorite What's
A meteoroid is a natural fragment
of rock less than 1 km (.6 mi) across that orbits the Sun.
A meteor is the streak of light
caused when a meteoroid enters Earth's atmosphere. Air friction
melts the meteoroid's surface, making it glow white hot. Meteors
also are called shooting stars.
A meteorite is a meteoroid that
survives the fiery passage through the atmosphere and crashes
to Earth. Most meteorites come from asteroids, but a few are
from Mars and the Moon.