VIDEO: First Look - Matt Damon in New Teaser for THE MARTIAN

NASA offers a declassified look at the psychological testing involved in preparing the ARES 3 crew for their journey to Mars in the new thriller THE MARTIAN, in theaters this October.

The film stars Matt Damon, Jessica Chastain, Kristen Wiig, Jeff Daniels, Michael Peña, Kate Mara, Sean Bean, Sebastian Stan, Aksel Hennie, Donald Glover, Mackenzie Davis, and Chiwetel Ejiofor. Get a first look at an all-new trailer below!

During a manned mission to Mars, Astronaut Mark Watney (Matt Damon) is presumed dead after a fierce storm and LEFT BEHIND by his crew. But Watney has survived and finds himself STRANDED and alone on the hostile planet. With only meager supplies, he must draw upon his ingenuity, wit and spirit to subsist and find a way to signal to Earth that he is alive. Millions of miles away, NASA and a team of international scientists work tirelessly to bring "the Martian" home, while his crewmates concurrently plot a daring, if not impossible rescue mission.

As these stories of incredible bravery unfold, the world comes together to root for Watney's safe return. Based on a best-selling novel, and helmed by master director Ridley Scott, THE MARTIAN features a star studded cast that includes Jessica Chastain, Kristen Wiig, Kate Mara, Michael Peña, Jeff Daniels, Chiwetel Ejiofor, and Donald Glover.