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National Aeronautics and Space Administration

Goddard Space Flight Center

Sun-Earth Day 2009: Our Sun Yours to Discover.

Sun-Earth Day 2009: Our Sun Yours to Discover

IMAGE GALLERY

CORONAL HOLE A giant coronal hole appears on the sun on January 8 ,2002. (SOHO-EIT)
CORONAL HOLE

A giant coronal hole appears on the sun on January 8 ,2002. (SOHO-EIT)

NASA Fact

A major solar 'superstorm' such as the one in 1859 could cost $30 billion a day to the US electrical power grid, and up to $70 billion to the satellite industry.