Watch NASA's Free Documentary About Protecting Earth From Deadly Asteroids

Epic doccie ‘Asteroid Hunters’: inside Earth’s defence against cosmic threats

How we defend Earth: Inside asteroid detection & planetary defense missions

‘Only a matter of time’ until apocalypse

Sentinel-06 Orbital Defense Station In the video, the Sentinel-06 rises slowly from low Earth orbit, completing a maintenance cycle before resuming its silent vigil in the asteroid defense network. Deployed in 2559 as part of the Sky Shield Program, the Sentinel-06 is a cornerstone of planetary defense — larger, faster, and more autonomous than any previous model. At 550 meters long and weighing around 900,000 tons, it serves as a strategic hub for monitoring and intercepting near-Earth objects.