When you think of Interstellar , the first faces that come to mind are likely Matthew McConaughey’s Cooper or Anne Hathaway’s Brand. But for about 45 gripping minutes in the middle of the film, the spotlight shifts to a surprise character: Dr. Mann, played by a heavily-disguised Matt Damon.
Dr. Mann was considered the "best of us," as Cooper later notes. He was brave, intelligent, and inspiring. He landed on a frozen, barren ice planet. However, his planet was a nightmare—a frozen wasteland with a surface of deadly ammonia clouds and no future for humanity. This is where the tragedy begins. Instead of admitting his planet was useless (and thus condemning himself to death with no hope of rescue), Mann falsified his data. He sent the "thumbs up" signal, indicating his planet was viable. He knew that the next mission, the Endurance crew, would come to save him.
When Cooper, Brand, and Romilly arrive on Mann’s planet, they find a desperate, trembling man who feigns joy. He shows them a sliver of "organic material" in the ice (which he planted) and claims the surface below is habitable.
We watch as the airlock door smashes into Mann’s helmet, cracking it instantly. His body is thrown into the vacuum of space. As he tumbles away into the blackness, the camera holds on his frozen, terrified face, spinning helplessly into the void.
Dr. Mann represents the failure of the human spirit. He proves that intellect and bravery mean nothing if you lack integrity. His betrayal kills the gentle Romilly, nearly kills Cooper, and critically damages the Endurance , forcing the crew to attempt the dangerous "slingshot" around Gargantua that costs them 51 years of their lives.
