S1, E1: This summer, adventurous celebrities prepare for take-off to the red planet, where they will live, eat, sleep, strategize and bond with each other in the same space station. During their stay, they will be faced with authentic conditions that simulate life on Mars, and they must use their brains and brawn, or maybe just their stellar social skills - to outlast the competition and claim the title of brightest star in the galaxy. The celebrities will compete in missions and will vote to eliminate one of their crewmates each week, sending them back to Earth. Cue the intergalactic alliances and rivalries. The 12 celebronauts heading to “Mars” include Lance Armstrong, Natasha Leggero, Marshawn Lynch, Christopher Mintz-Plasse, Adam Rippon, Ronda Rousey, Tom Schwartz, Richard Sherman, Tinashe, Porsha Williams Guobadia, Tallulah Willis and Ariel Winter. Once on "Mars", this group of stars will receive interstellar assignments from legendary actor and Star Trek icon William Shatner, who serves as Mission Control. Stars on Mars will send these famous rookie space travelers where no one has gone before and reveal who has what it takes to survive life on "Mars".