Our only solar storm warning satellite on its last legs

Every time a giant solar storm — like the one that blasted by Earth earlier this week — rushes past NASA's Advanced Composition Explorer satellite, scientists at NOAA's space weather forecasting branch cringe. The satellite, nicknamed ACE, provides the only advance notice of incoming high-energy particles from the sun which can wreak havoc on radio, GPS and satellite communications that are now embedded in modern life. More

(Source: MSNBC - Mar 10)