National Aeronautics and Space Administration

Goddard Space Flight Center

Sun-Earth Day 2010: Ancient Mysteries, Future Discoveries


Promotional Materials!

Sun-Earth Day Flyer

Sun-Earth Day Flyer

Download this year's Sun-Earth Day Flyer and help spread the word!


The fastest coronal mass ejection was recorded on August 4, 1972 and traveled from the sun to earth in 14.6 hours - a speed of nearly 10 million kilometers per hour!