Dots representing tracked bits of space junk encircle the planet. Most of these objects are concentrated in low Earth orbit — the region of space within 1,200 miles of the Earth's surface. - NASA ODPO ...

The problem of space debris isn't just a science fiction scenario anymore. It's a real threat that gets worse every year, and honestly, most people don't realize how urgent it's become. We're talking ...

An artist’s concept of the Moon (right) and Mars (center) against the starry expanse of space. A sliver of the Earth’s horizon can be seen in the foreground. Credit: NASA HOUSTON—NASA has initiated ...

(CNN) — Sometimes, what goes up doesn’t come back down — instead, it becomes a problem. Junk is accumulating in space at a fantastic pace, millions of pieces orbit the Earth, from broken satellites to ...