No, this is not a bad movie ....
No, this is not a bad movie and is certainly entertaining enough that adults willing to suspend some disbelief will enjoy it. And if you grew up in the space race era as I did, you will most certainly enjoy the scenes with NASA, the rockets and in space. The story is definately so-so though, and if the writers had spent a little more effort developing a plot, this could have been a much better movie.
However, I think every movie of this type (CGI Animation) needs to be judged against "Finding Nemo" which is incredible. It's also proof that a kids movie can have a great story line and be quite enjoyable for adults as well. But what do I know? My signature is a quote from a cartoon show.
"The same thing we do every day, Pinky, TRY TO TAKE OVER THE WORLD!"