The ending makes no sense; not in terms of science but strategically

Rating: 6/10 (2 January 2015)

So you've learned to manipulate gravity thus have access to unlimited energy and your decision is to leave earth? Where are you going? You'd still have to deal with the crop blight stuff because alien worlds wouldn't have the type of vegetation humans could deal with without some sort of technical intervention which now you have the resources to do it on earth just as easily. Is it due to population? Unless I misread the movie that was already taken care of by the blight issue. Seems like the plot line was just to explain some science (poorly), use whiz-bang CGI (Ok but not great), and babble on philosophically. Way to long for the minimal payoff; make sure you go to the restroom before the movie starts.