All of this adds up to the likelihood, the ESA warns, that a theoretical scenario known as the Kessler Syndrome could become ...

Close calls are becoming more common as low Earth orbit becomes more and more crowded with satellites and debris.

What to know about the growing threat of space debris as satellites multiply and experts warn of potential orbital disaster.

A map indicates the 14 mission locations on Mars ... Usually when scientists talk about "space junk," they are referring to the immense amount of debris orbiting the planet that endangers ...

In all, more than 7 tons of human "space litter" is believed to be strewn across the landscape. Among the junk − or potential artifacts for some kind of museum on a future Martian colony ...