This could possibly be the worst sci-fi movie I have ever seen. The science was laughable, the plot was silly, and the acting was horrible. Thank God my tickets were free because I would never pay $$$ to see this dog. I mean it is so bad dont even rent the dvd.
Here is one example of the dicrepancies. At one point these people are in their "Terranaut" suits working outside the ship in 4500 degree temperatures with something crazy like 800,000 pds. of pressure psi. Now at a later point in the movie they are stuck underwater at 800 feet and wondering what to do??? I mean wtf man? This suit that can survive the pressure and heat at the CORE OF THE PLANET CANT WITHSTAND 800 FEET OF FUCKING WATER PRESSURE???? At that point I started laughing out loud much to the annoyance of the other movie guests.
If you want a good laugh and know anything about the basic principles of thermodynamics you may enjoy it as a comedy, otherwise DONT GO!