0
votes
0answers
79 views

How fast do large asteroids usually travel?

I have just watched this video made by discovery channel, and you can hear the narrator at 0:51 saying that : "even though it is moving at 720 THOUSANDS kilometers per hour..." I stopped once I heard ...
7
votes
4answers
3k views

Comet versus asteroids versus meteors

What are the differences between Comet versus asteroids versus meteors in practical terms?