Danny Boyle's new movie is a sci-fi thriller. I liked what he had done with 28 Days Later so I went to have a shufty.
They don't really explain the why (apparently cut for time), but the crew are trying to restart the sun which is slowly burning out. If you get past that bit, it's extremely tense from the get-go. The acting is superb, the writing's pretty tight, and the effects are great (save for the usual bugaboo of mine: sound in space.)
There's a subplot that kicks in at the end that's not needed -- the action and tension level's high enough, but it wasn't a deal-breaker for me. Overall, I liked it. It didn't have much terribly original in the storyline, but the presentation was unique.