Those are fun. I got into trouble for playing with the Space Station s**t what was it seven, eight, nine years ... how many years ago was that? Crap. Eight, nine years ago we messed around with the Space Station. We adjusted the temperature on it. It was quite fun. We got yelled at by NASA. If they're going to leave open s**t that's not encrypted that's their own damn silly fault.
...We tried. The Curiosity Rover on Mars. The suggestion was to take that for a spin. We've actually started to investigate it.
The closest we've done is figure out exactly how they're communicating, how they're controlling it, and we might have one or two of the passwords for some of the software that we know are still in default mode. But the problem is actually getting into it without breaking more laws than we're used to breaking. No, I think NASA would probably really get pissed at me for that one.
Might fool a hippie liberal arts major tech journalist though...