Meteoroid . . . .
The grain, stone or rock wandering through the solar system.
Meteor . . . .
The streak of light we see in the sky, if the meteoroid happens to
run into the Earth and burn as it plows through our atmosphere.
Meteorite . . . .
The fragment that survives and hits the ground, if the meteoroid
was big enough to have anything left of it after its fiery trip through
the atmosphere.
