Space junk at a ‘tipping point’: study

space junk

Space junk: a conceptual artwork representing defunct satellites, failed missions, and shrapnel orbiting Earth.

“A tipping point” for collisions has been reached with the amount of debris orbiting the Earth, which would in turn generate more of the debris that threatens astronauts and satellites, according to a U.S. study released on Thursday.


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In Lasers We Trust: NASA Researches 5kW Galactic Trash Disposal System


Dealing with space junk.

Space junk is a growing problem — 200,000 pieces and counting — and as the amount of earth’s orbital debris increases, so does the chance some satellite will be involved in a cosmic collision. As this would cause much gnashing of teeth and woe for the affected terrestrial parties, some researchers from NASA’s Ames Research Center have pitched the idea of removing said junk with a laser — once again proving that everything’s better with lasers…

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Space Junk Litter Earth’s Orbit


Outer space seems vast and empty, but the space directly above Earth

is quite crowded with satellites and … space junk!

Between the launch of Sputnik on 4 October 1957 and 1 January 2008, approximately 4600 launches have placed some 6000 satellites into orbit; about 400 are now traveling beyond Earth on interplanetary trajectories, but of the remaining 5600 only about 800 satellites are operational – roughly 45 percent of these are both in LEO and GEO. Space debris comprise the ever-increasing amount of inactive space hardware in orbit around the Earth as well as fragments of spacecraft that have broken up, exploded or otherwise become abandoned. About 50 percent of all trackable objects are due to in-orbit explosion events (about 200) or collision events (less than 10).

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