Dear EarthTalk: What is space debris, and can we reduce or eliminate it? – H.B., Troy, NY ...

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Airlines have long treated thunderstorms, snow and volcanic ash as the main reasons to slow or stop flights. Now a new hazard is rising from above, as fragments of rockets and satellites begin to ...

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 lost ...

Space junk falling out of orbit and crashing toward Earth is a growing threat. Indeed, old satellites and spacecraft parts reenter our planet’s atmosphere more than three times a day. When these ...