Most meteorites come from the asteroid
belt. The first clear evidence came in 1959, when scientists
were able to photograph an incoming meteorite with enough
accuracy to calculate its orbit and determine where it originated.
Later, other meteorites were traced back to the asteroid belt
as well. In the 1980s, we recognized that a few rare meteorites
come from the Moon and Mars. Comets are probably a significant
source of the dust-like micrometeorites that shower the Earth