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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

Between May 10-12, 1999, the solar wind nearly vanished, causing Earth's magnetosphere to expand in volume by over 100 times!