"Meteorites are delivered to us free of charge," says Ralph Harvey , a professor in the department of Earth, environmental, and planetary science at Case Western Reserve University . "Yes, they’re delivered randomly. Yes we have to go pick them up in weird places, but the value of them as specimens is not diminished," says Harvey. Harvey uses meteorites, rocks that have fallen to earth from space, to study the small, seriously weird asteroids they came from. "We really don’t know how sticky that