Another fireball explodes over Russia

Why does Russia seem to get so many bright meteors? Well at 6.6 million square miles it's by far the largest country in the world plus, with dashboard-mounted cameras being so commonplace (partly to help combat insurance ...

More than 1,000 satellites are flying overhead

The spotting of ocean debris by satellites during the search for the lost Malaysian airliner has drawn attention to those orbiting platforms. A primer on what's in orbit, with help from Nicholas Johnson, who retired Thursday ...

Reducing debris threat from satellite batteries

(Phys.org) —Across a satellite's working life, batteries keep the craft's heart beating whenever it leaves sunlight. But after its mission ends, those same batteries may threaten catastrophe.

Capturing derelict satellites adrift in orbit

Standard space dockings are difficult enough, but a future ESA mission plans to capture derelict satellites adrift in orbit. Part of an effort to control space debris, the shopping list of new technologies this ambitious ...

Cleaning up space debris with sailing satellites

Since the birth of space flight in 1957, the number of man-made objects orbiting the Earth has grown every year. There are now more than 15,000 such objects larger than 10cm, at least those that we know of. Even very small ...

Space droids battle to save Earth from comet

A comet heading towards Earth threatens humanity's existence – that was the virtual scenario of this year's Zero Robotics tournament. Secondary-school students from across Europe controlled miniature satellites on the International ...

SST to monitor objects 22,000 miles above Earth  

As satellites become more common, they face growing risk of colliding with space debris and even each other. The U.S. Department of Defense has thus made space situational awareness a top priority to maintain communication, ...

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