The Sun in STEREO

NASA’s STEREO mission – twin spacecraft orbiting the Sun, one ahead of Earth and the other behind – has reached a milestone in its mission today: both spacecraft are now in position to be able to view the entire Sun at the same time, giving scientists the ability to monitor solar activity on both sides!…

Pillar of Fire

Ok it’s not fire, it’s plasma, but it’s nevertheless a wonderful image by space photographer Alan Friedman showing a coronal ejection towering over 200,000 miles above the surface of the sun. It was taken on July 27, 2010. Coronal mass ejections (CMEs) occur when particularly large magnetic loops filled with plasma “snap” and expel their…