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Science Photo Library/Alamy Stock Photo Space should not be a garbage dump. Nevertheless, we have treated the sky as a wrecker’s yard for more than half a century, and the amount of space junk orbiting Earth has skyrocketed in recent years. Now filled with the decaying hulks of defunct rockets and satellites, our polluted orbital environment is becoming more…

You saw a strange light in the sky today just after sunset? Then a string of bright lights moving across the sky that looked like alien spaceships coming into land. Something bright and white moved…

There’s a lot of trash on the Moon right now – including nearly 100 bags of human waste – and with countries around the globe traveling to the Moon, there’s going to be a lot more, both on the luna…