SPACE WEATHER PROBES SHATTER GPS RECORD: We all use GPS--to find ourselves in the back country, to navigate to the grocery store, to locate lost pets. NASA's four MMS spacecraft recently used the same system to locate themselves an astonishing 116,300 miles from Earth, almost halfway to the Moon. This shatters previous records and expectations of how far away GPS can work. Visit today's edition of Spaceweather.com to find out how they did it.
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Above: An artist's concept of NASA's MMS spacecraft using GPS to navigate halfway to the Moon.
