There's no way to know how old or new the rubble pile may be. For an hypothesis that makes global warming look like a picnic, take a look at astronomer Tom VanFlandern's site: http://www.metaresearch.org/solarsystem/eph/eph2000.asp
Exploding planets, oh my!
No way.
Huh. Well, I guess basic physics must have been overturned.
Also, does anybody have a page with all the asteroid pictures in one place? I've seen maybe 3 and that can't be the actual data. Where are they? The official site is a useless collection of press releases and orbit diagrams.