There, we have been extraordinary, ... But we've only been able to look at a section of rock maybe 10 meters thick, and we want to know how do these rocks relate to what's above and beneath them.

That makes it a tremendously more compelling place to go study.

As far as we can tell from all available data?slopes look relatively benign.

From an engineering standpoint, you really have to tip your hat. These rovers were designed for a lifetime of three months and now it's not clear when they're going to stop.

I could have spent years directing the rover at that site. There were five priority things that I'd still trade an awful lot to get.