[bonesmccoy]

One point... An asteroid is a larger object than a meteor. Meteorites routinely hit Earth, but large events seldom occur in a person's lifetime. However, given the larger scope of human development in our lifetimes, chances are increasing that meteorities could cause problems. The Tunguska event has been theorized to be either cometary debris or a meteorite. Meteor strikes should have created substantial debris and crating. If memory serves, scientists were unable to locate an impact site. Thus, the cometary explanation (being ice and methane) surfaced.

[TheLion]

Doesn't an asteroid become a meteor when it hits the atmosphere and then a meteorite when it strikes earth?