S1, E12: The five remaining crewmates endure their last days on the red planet with a suspenseful double-extraction, followed by the final three stars competing in a concluding double-phase mission. To be the last celebronaut standing, the surviving space invaders must correctly answer trivia questions from the hab manual and advance to the final challenge, where they must properly assemble a satellite tower and broadcast a personalized message to Earth. Find out who outlasts the competition and claims the title of brightest star in the galaxy.