The Martian is a movie about a botanist stranded when his crew accidentally leave him behind on Mars. Sadly, some people think it's real.
The Ridley Scott-helmed blockbuster starring Matt Damon hit cinemas last week and has received rave reviews and overwhelming praise.
It has a 93 per cent approval rating on Rotten Tomatoes, with critics raving about its special effects, Scott's "wide open" direction and Damon's performance as astronaut Mark Watney.
The Philadelphia Weekly called it a "celebration of science, selflessness and good old-fashioned smarts".