I liked it a lot. A friend of mine went to see it when it was on release and he was disappointed. He'd been led, by the trailers and reviews, to expect a pants-wetting outer-space horror along the lines of Alien or Event Horizon, and it certainly isn't that. It's much more like Solaris.
I would have liked some explanation of how a bomb with the mass of Manhattan could kick-start the Sun - I know from background reading that the Sun in the film has become afflicted with an exotic particle called a `Q-ball' and that the bomb would sort this out, but they might have mentioned it in the movie. I also thought Mark Strong's character, Icarus I's captain, Pinbacker, could have done with a bit more explanation, but I thought he just about worked without it. And maybe we could have been told how the Icarus II was supposed to survive to get home after deploying the bomb - and the shield.
Apart from that, I have no serious issues with it. Thoroughly enjoyable, a limited budget deployed very intelligently and more than adequately rendered by the actors. Cillian Murphy will be a great star one day. And Chris Morris was unexpectedly good after his work in Fantastic Four, which I thought was kind of sloppy.
Yep, fine film, enjoyed that. Next: Hot Fuzz.