Nice Twitter comments:

“And what's this thing coming toward me very fast? So big and flat and round,
about 1 hour ago from web
it needs a big wide sounding name like 'Ow', 'Ownge', 'Round', 'Ground'!”
about 1 hour ago from web
“That's it! Ground! Ha! I wonder if it'll be friends with me?”
about 1 hour ago from web

Shame the website seems to be getting totally hammered :(
http://twitter.com/LCROSS_NASA