The second season of Star Trek: Discovery hinges on the mysteries of time travel. The crew pursues seven red burst signals through the stars, eventually finding they were sent by a time traveler they have named the Red Angel. Michael Burnham and the Discovery crew's relationship with time only grows more complex towards the end of the season, when they decide to send the ship nearly a thousand years into the future to prevent a self-aware AI, Control, from getting its hands on precious data from an ancient life form (the "Sphere"), and evolving to subjugate all intelligent life.