I watched The Martian (2015) not long ago and it has finally dawned on me why it looked a bit weird:
When Mark was stranded on Mars because of a dust storm, back on Earth they hold a funeral for him. It is not until late in the movie that they discover he is still alive.
When NASA sends a rescue crew to Mars, they somehow get into contact with Mark via his communication device. Mark is then told to hold tight in the pod until NASA launches the pod off Mars.
What I want to know is how did NASA managed to connect to that very pod when it is of very little use and Mark had gutted it out so that he can use it for other purposes?
How did they connect to it from that far in space let alone launch it?
The pod would have had very little fuel left, if any at all because of the time that it has spent on Mars, and the signal frequency and mechanisms would have been knocked out from the storm.
Am I missing something? I really want to know.