Say the word "sci-fi" and most people think outer space. It's ironic then, that so few movies set in space are actually made.

What it’s about: In order to save the planet from the nearly-expired Sun, astronauts attempt to physically move it to a safer location in outer space. Why it is one of the best space movies ...

Former NASA astronaut Nicole Stott rates depictions of outer space in "Gravity," "Apollo 13," and "Interstellar" for realism.