27 Oct '11, 2pm

DARPA to Recycle 'Graveyard' of Satellites

DARPA to Recycle 'Graveyard' of Satellites

The orbit of GEO satellites is about 20,000 miles further from the surface than the International Space Station, which NASA discovered is better for communication because a high orbit allows satellites' speed to closely match the rotation speed of Earth. Photo: NASA The Defense Advanced Research Projects Agency (DARPA) is planning to recycle billions of dollars worth of non-working satellites that float in a “graveyard” above our planet, the agency announced last week. Right now, more than $300 billion worth of satellites are drifting through space in geosynchronous orbit (GEO) – or 22,000 miles from Earth’s surface – but many of these have been “retired” due to normal end of useful life, obsolescence or failure. Retired satellites are typically put into a GEO-disposal or “graveyard” orbit, but many of them still have working component parts. Through its Phoenix Program , ...

Full article: http://earth911.com/news/2011/10/27/darpa-to-recycle-grav...

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