Space junk has filled up so much of Earth's orbit that it's endangering satellites and astronauts. Along with those recognizable objects, there are millions of bits of debris in orbit traveling faster than a bullet. NASAEarth's orbit is so crowded with junk now that roughly 1,000 warnings about possible impending collisions go out to satellite operators each day, Berger said. A projectile strikes a mock-up of a spacecraft in a NASA-Air Force test meant to simulate space debris collisions. Advertisement"That would've been a hypervelocity impact creating thousands of pieces of debris," Berger said.

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Persons: Thomas Berger, Berger, Araz, Siamak, It's, Kessler, Space.com, Daniel Baker, Baker Organizations: American Geophysical Union, Washington DC, NASA, US Space Force, Weather Technology, Research, Education Center, University of Colorado, Air Force, Arnold Engineering, Force, Space, SpaceX, Atmospheric, Physics, UC Boulder, Congress, FCC Locations: Washington, Russian, University of Colorado , Boulder, American, Russia, China, India