Do this for a better ending...
( warning this may contain spoilers )
Overall an ok movie. But if you want to keep from getting a headache from the ending, then do the following:
Turn off the movie at the 1 hour 3 minute to about the 1 hour 5 minute mark, just a split second after they lift off from europa.
Don't watch the movie after 1 hour 5 minute mark.
Then use your imagination, or someone else's if you lack imagination, to create a happy wonderful realistic end to the movie.
Warning: watching this movie past the 1 hour 5 minutes mark may make any headache you may already have worse.
Yes I would recommend watching this movie, even though it does have some ..(sigh).. issues and wtf palm to forhead moments.