Being a movie by Christoper Nolan you can expect a movie to be long and dull paced. And he would never endorse 3D. Still his Inception movie was visually stunning and appealing inspite of not having the 3D.

Coming to this movie, this could have been improved a lot in terms of visual effects and could have implemented 3D. But since it is a movie with long duration it is good that this one was without 3D.

What makes you sit through entire movie is story that gets interesting with each minute. You will have cope with certain Physics mumbo-jumbo terms which would be difficult to concentrate on and would wish you remote control in theater seek back and forth.

The recent best "space" themed movie was Gravity and if its still playing in your town watch that instead of this. Though the story concept is different you would be better off watching that than this one. This movie was watchable and enjoyable but I feel it won't be worth for what you pay for.