[spoiler] So many things wrong.
It's boring AF, and I like "boring" movies, Moon was amazing.
Launching on a Delta II (and then showing a completely different rocket at boosters separation), really? That thing is old, would never be man-rated (too many SRBs) and can't lift that much stuff to a Mars crossing orbit.
Magnetic storms don't look like that, they don't look like anything actually, they're invisible to the human eye.
Three weeks to get to a station, where the heck is that station?? Not Moon orbit, that takes less than three days to get to and that is the only logical place to put a "fuel station" on "the way" to Mars.
About the lady who had to "turn around", there's no such thing! You can't "turn around" from a trans-Mars orbit.
EVERYTHING science related about this movie is WRONG.
Stupid guy even says "...gravity crushing me...", that's not gravity, it centripetal force from the rotation of your dumb spacecraft that turns into the Apollo CSM on Martian entry (way too steep and way too high btw) and then lands using rockets with fuel coming from the writers ass.
You choose the worst possible landing site, filled with mountains and big ass boulders, step out of the "lander" by a narrow ass door that looks nothing like the one on the aforementioned Apollo CSM that you presumably landed with. [/spoiler]