[EricH]

A few minutes ago, I saw an online article saying that Discovery is good to return, pending some laser examination of a slightly damaged area of the belly. Apparently ISS crew got pictures of areas thought to be damaged and they look fine.

In regards to a rescue mission being grounded, I doubt that will happen. The max crew size for that would be three, though I doubt that more than two would go. But, if they don't need rescue, Atlantis is grounded until further notice, same as all the others.

I'd be willing to say that NASA is looking at new designs for a shuttle, if they haven't started already.