mrstickball on 04 February 2010
They already found out what it was.
2 asteroids struck eachother earlier this year in the asteroid belt. What you see is the result of that. I was just reading about this on Space.com
Now, if you want an even better read - they found material in an asteroid that is harder than diamonds. Now that is an interesting story.
Back from the dead, I'm afraid.
Essay Pro