Low Earth orbit has shifted from a quiet scientific outpost to one of the busiest pieces of real estate in human history. With tens of thousands of satellites and fragments now circling overhead, ...

New research describes how a kilonova explosion triggered by colliding neutron stars could eradicate life on Earth for thousands of years. Thankfully, the odds are incredibly low. When you purchase ...

Add Yahoo as a preferred source to see more of our stories on Google. Earth's orbital overcrowding is approaching a breaking point, according to a new analysis using a warning metric called the Crash ...

Cosmic “touchdown airbursts” — explosions of comets or asteroids above Earth’s surface — may be far more common and destructive than previously thought, according to new research. Unlike ...