Time to Orbit: Unknown 1 -- The Javelin Program

When Dr Aspen Greaves signed up for the Javelin Program, humanity's first foray into colonising deep space, they expected to wake up to life in a thriving colony on a distant planet. Instead, they find themself five years away from their destination on a broken spaceship full of complex mysteries, dead astronauts, and a very unhelpful AI. Aspen wasn't trained for this. But if they can't keep themselves alive, get the ship in working order, and find out what went wrong by unravelling a chain of mysteries leading all the way back to distant Earth, then neither Aspen nor the five thousand sleeping passengers in their care will ever see a planet agai.,