It is Earth year 2213—but, of course, there is no Earth anymore. Not since it was burned to a cinder by the sun, which has mysteriously begun the process of going supernova. The human race has fled to Mars, but this was only a temporary solution while we prepare for a second trip: a one-hundred-fifty-year journey to a distant star, our best guess at where we might find a new home. Liam Saunders-Chang is one of the last humans left on Mars. The son of two scientists who have been racing against time to create technology vital to humanity’s survival, Liam, along with his friend Phoebe, will be on the very last starliner to depart before Mars, like Earth before it, is destroyed. Or so he thinks. Because before this day is over, Liam and Phoebe will make a series of profound discoveries about the nature of time and space, and find out that the human race is just one of many in our universe locked in a desperate struggle for survival.

It is Earth year 2223, but the Earth, along with the entire solar system, is gone. Liam and Phoebe, having barely escaped our exploding sun with their lives, are in stasis for the decade-long journey to the rogue planet Delphi, where they hope to meet up with the rest of the human refugees, find help for their injured parents, and pass along the devastating things they discovered on Mars: that someone destroyed their world intentionally, and that that someone might still be after them, trying to finish the job. Phoebe is carrying her own dark secret. One that finds her waking up secretly at various points in their journey, changing their path through space. One that will decide the fate of the human race, and many more besides. One that, very soon, she must reveal to Liam, whether he’s ready for the truth or not.

The conclusion to Kevin Emerson’s epic, which Tui Sutherland, New York Times bestselling author of the Wings of Fire series, has called “perfect science fiction.” It is Earth year 2256—but the fate of the few who even remember Earth is perilously in doubt. Mina Saunders-Chang and many of the surviving humans are stranded in the Centauri system, having barely survived their confrontation with the Telphon refugees. Now everyone—human and Telphon alike—is caught in the blast zone of the Centauri supernova. And yet there’s only one question Mina is asking: Where are Liam and Phoebe? Having barely made it through the battle at the Centauri system with their lives, Liam and Phoebe awake on a mysterious ship in the middle of a dead universe. The ship bears the markings of a human starliner that disappeared decades ago—but even more disturbing than that is the massive alien machine floating in the starless space before them. A machine long abandoned but now showing signs of life. A machine that has begun speaking to Liam in a voice only he can hear...