Name of movie please?

The movie is about a group of people on a spaceship on course to Mars. When they get them all except one of them go down the other one is a female who stays on the ship and watches them with a camera from the ship, they walk about and later in the movie for some reason they can't get back to the ship, they think they are about to die because they are going to run out of oxygen but it turns out Mars has an Atmosphere that is breathable, some othe stuff happends they get to some big Fuel place and their Robot gets broken and goes Murderous. They hear about a pod that landed there years ago and they head for it, while on the way they find out why all the algi has been destroyed it was because of some bugs, the bugs kill some people (don't remember how) then there is a large storm so they hide in a cave While also hiding from the robot. then they get to the Pod but there is only space for one person and there is no power. somehow one of the guys die and the last one uses a nuclear device from the robot to power the pod. Thanks in advance for your answers. =)