SpaceX is sounding a stark warning after one of its Starlink satellites narrowly avoided a collision with a spacecraft from a Chinese launch, arguing that low Earth orbit is drifting toward a ...

Astronomers have spotted a quasi-moon near Earth — and the small space rock has likely been hanging out near our planet unseen by telescopes for about 60 years, according to new research.Related video ...

NASA estimates that roughly 25,000 near-Earth asteroids measuring at least 140 meters across orbit in our planetary neighborhood, but surveys have so far cataloged only about 40% of them. That gap ...