Omega (The Academy, #4)

A civilization-destroying omega cloud has switched direction, heading straight for a previously unexplored planetary system—and its alien society. And suddenly, a handful of brave humans must try to save an entire world—without revealing their existence. The Washington Post No one writing today is better than McDevitt at combining galaxy-spanning adventure with the genuine novel of ideas. This latest amalgam of hard SF and humanist concerns is McDevitt at his best, and that is very good indeed. — Bill Sheehan "Somewhat sentient, the omega clouds obliterate life on every planet in their path. Now one of them is predicted to reach Earth in about 900 years. But between Earth and the cloud, lies the home world of the Korbikkan race. They are humanoid sentients and one of three sentient races known to humanity. Now, mankind must decide whether to marshall the science resources needed and to bring to bear the weaponry needed to save another race without putting itself at risk. Can a human rescue team save thier whole world without letting the inhabitants know they are being saved?"--SFsite.com The best military and scientific minds on Earth band together in a desperate attempt to preserve an alien society from the deadly force heading for its home planet