Blockbuster space film The Martian fakes documentary with world's most famous astrophysicist

If you're a science geek, this is unbelievably cool.

Upcoming science fiction movie The Martian has a lot going for it, with a massive budget, director Ridley Scott, and a cast including Matt Damon, Jeff Daniels, Sean Bean and more.

How, you ask, could the hype possibly be ramped up more? By creating a "documentary" about the space mission with the world's most famous figure in space theory.