by Jack McDevitt (Published by Ace)
Nominated for Best Novel in 2008
Chosen as One of the Five Best SF Novels of the Year by Library Journal.
When a young physicist unveils an efficient star drive capable of reaching the core of the galaxy, veteran star pilot Priscilla ?Hutch? Hutchins finds herself back in the deepest reaches of space, and on the verge of discovering the origins of the deadly omega clouds that continue to haunt her.