asteroids Richard Crowson: Comets! Or Asteroids! Whatever, Just Blame Someone! By Richard Crowson • Nov 8, 2013 NASA APPEL / Flickr / Creative Commons Listen Listening... / 1:37 There have been an awful lot of unpredicted rogue comets entering Earth’s atmosphere lately, first in Russia and then this week in California. Shouldn’t we be taking action? And by “action” I mean placing blame.