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I tried to do my duty Cooper. But I knew, the day that I arrived here, this place had nothing... and I resisted the temptation, for years. But, I knew that, if I just pressed that button, then, somebody would come and save me.
~ Mann revealing his true intentions

When I left Earth, I thought I was prepared to die. The truth is, I never really considered the possibility that my planet wasn't the one.
There is a moment…
~ Mann's last words

Dr. Mann is the main antagonist of the 2014 science fiction film Interstellar.

He is portrayed by Matt Damon, who also portrayed Colin Sullivan and Tom Ripley.


Dr. Mann was a scientist who at first had a very strong belief for finding another habitable planet and left with the hope his planet would be the one to sustain human life. However, as time passed, he began to lose hope due to the fact that the planet he was on had absolutely no chance to sustain life. So with this feeling of hopelessness taking him over, he eventually chose his own life over the mission after years of resisting this temptation, so he faked the data for his planet and put himself in a cryogenic stasis in the hopes that someone would rescue him. His cowardice, or as he says his "survival instinct", controls him to the point that he committed murder because they need the Endurance to go to Edmund's planet and initiate Plan B, as Mann's Planet could not physically sustain human life. Despite his cowardly actions, he was still a good man at one point, with Brand pointing out he was the bravest man she ever knew. When Dr. Mann cracked Cooper's faceplate, he told Cooper he was doing this for humanity, and that Cooper was dying for a righteous cause. He even insisted to Cooper that had anyone else gone through what he did, they would have become exactly like him and done exactly what he did, saying few men had ever been tested like he had been tested.


Dr. Mann was the Project Lazarus leader who convinced eleven other scientists to participate in the cataloging of a dozen habitable worlds on the other side of the wormhole. Mann, however, was stranded upon an icy planet that was uninhabitable and could not substitute Earth as the new home planet for life (in Interstellar, the Earth is dying and failing to nurture life, forcing NASA to send astronauts and engineers to search for a new home).

Mann is reawakened by the crew of the Endurance approximately 30 years later due to the time dilation of the Endurance on Miller's planet. Mann was critically low on power at this point and Joseph Cooper had to manually break open his sleep-bag to wake him. Dr. Mann is shaken by the appearance of people coming to his rescue, stating he had not set a wake date to his sleep. It is then revealed that he and Prof. Brand knew that Plan A was impossible and that the only contingency that allowed for human continuity was Plan B.

Once the truth about Brand's Plan A being impossible was revealed, it was decided that Cooper would return home while Mann, Romilly and Brand would proceed to carry out Plan B on Mann. Mann, knowing his planet could never support human life, in secret, attempts to murder Cooper, seeing his death as necessary to the completion of the mission. Mann did not want to let Cooper leave for Earth with the Endurance, as he now needed it to get to Edmunds. After witnessing the explosion of his capsule with Romilly inside, Mann changes his plan to lie about Cooper's death being an accident and instead attempts to maroon the Endurance crew on Mann's planet in order to live and to finish Brand's Plan B mission on his own. He only succeeds in stealing Ranger 1 and docking it imperfectly on the Endurance.

While dismissing Brand's pleas to not do this without the rest of the crew's authority or action arguing that the plan is to save all mankind, he announces "There is a moment" before the airlock depressurizes, killing him and critically damaging the Endurance. TARS and Cooper rush to undo Mann's damage, which they succeed in.


  • Dr. Mann turns out to be the only Christopher Nolan villain yet who is not part of the film's central conflict, because Interstellar is the only film of the director which uses different type of the main conflict rather than confrontation.
  • This Is not the only role that Matt Damon played an Astronaut, he portrayed Mark Watney In The Martian which was released a year later after Interstellar.