Space debris—the thousands of pieces of human-made objects abandoned in Earth's orbit—pose a risk to humans when they fall to ...

Old satellites and other space junk fall toward Earth every day, and the shock waves they create could be used to track their trajectories, according to new research.

As more and more space junk comes crashing down, a new study shows how earthquake monitors can better track incoming objects by tuning into their sonic booms.

As the threat of falling spacecraft increases, using earthquake sensors to detect the effects of their sonic booms could ...