
There are approximately 25,000 "city killer" asteroids in near-Earth orbit--and most are yet to be found. Small enough to evade detection, they are capable of large-scale destruction, and represent our greatest cosmic threat. But in September 2022, against all odds, NASA's...

A gripping account of the "city-killer" asteroids that could threaten Earth and the race to build a planetary defense system. There are approximately 25,000 "city killer" asteroids in near-Earth orbit--and most are yet to be found. Small enough to evade detection, they...

A gripping account of the "city-killer" asteroids that could threaten Earth and the race to build a planetary defense system. There are approximately 25,000 "city killer" asteroids in near-Earth orbit--and most are yet to be found. Small enough to evade detection, they...

There are approximately 25,000 "city killer" asteroids in near-Earth orbit--and most are yet to be found. Small enough to evade detection, they are capable of large-scale destruction, and represent our greatest cosmic threat. But in September 2022, against all odds, NASA's...
Release Date: Jul 28, 2026