Enjoyable - BUT is it's science valid?

Rating: 7/10 (19 April 2017)

I did enjoy the movie and the great eye candy of the two main stars. However, in light of 'equal opportunity' efforts now and in the future I do think that Jennifer's rear end should have been shown too. Also, I'm not sure about the movie's science being always being valid, for example: humans being able to be tethered outside the ship going half the speed of light, and not being fried while so close to the out of control reactor. Also, the much older awakened crewman seemed out of sync for his short useful life span at the final destination.