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Phoenix666 writes:

Scientists sounded the alarm Tuesday over the problems posed to space missions from orbital junk—the accumulating debris from mankind's six-decade exploration of the cosmos.

In less than a quarter of a century, the number of orbiting fragments large enough to destroy a spacecraft has more than doubled, a conference in Germany heard.

And the estimated tally of tiny objects—which can harm or degrade spacecraft in the event of a collision, and are hard to track—is now around 150 million.

"We are very much concerned," said Rolf Densing, director of operations at the European Space Agency (ESA), pleading for a worldwide effort to tackle the mess.

"This problem can only be solved globally."

Travelling at up to 28,000 kilometres (17,500 miles) per hour, even a minute object impacts with enough energy to damage the surface of a satellite or manned spacecraft.

If you always wondered why the Death Star had a trash compactor, here's your answer.

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