There are 3 books in the Starbound Trilogy series. The newest book is Their Fractured Light which came out in 2015.

1
These Broken Stars

By Amie Kaufman , Meagan Spooner ,

Book cover of These Broken Stars
"One of the most intense, thrilling, and achingly beautiful stories I've ever read."--Marie Lu, New York Times best-selling author of the Legend trilogy

The first in the New York Times bestselling author duo Amie Kaufman and Meagan Spooner's sweeping science fiction trilogy, These Broken Stars is a timeless love story…
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2
This Shattered World

By Amie Kaufman , Meagan Spooner ,

Book cover of This Shattered World
The second in New York Times bestselling author duo Amie Kaufman and Meagan Spooner's sweeping science fiction Starbound Trilogy is an unforgettable story of love and forgiveness in a world torn apart by war, a "sci-fi Romeo and Juliet" (Booklist).

Jubilee Chase and Flynn Cormac should never have met. Lee…

3
Their Fractured Light

By Amie Kaufman , Meagan Spooner ,

Book cover of Their Fractured Light
A year ago, Flynn Cormac and Jubilee Chase made the now-infamous Avon Broadcast, calling on the galaxy to witness LaRoux Industries' corruption. A year before that, Tarver Merendsen and Lilac LaRoux were the only survivors of the Icarus shipwreck, forced to live a double life after their rescue.
Now, at…