I adored the film. I'm a huge Danny Boyle fan, and I think that while the ending could have been better, it still manages to makes a smidgen of sense and entertain. Sure, it's almost fantasy, but it's just so much fun, it's like a space slasher done right.
For anyone interested in the work of Brian Cox and the research that inspired the film's concept, here's a website to start at:
http://public.web.cern.ch/Public/Welcome.html. Nothing has been 100% proven, obviously, but it is nice to know they took the time to do research and come up with plausible solution.