STEREO ECLIPSE: No human has ever witnessed a solar eclipse quite like this. NASA's STEREO-B spacecraft was about a million miles from Earth last month when it photographed the Moon passing in front of the sun. The resulting movie looks like it came from an alien solar system: full story.
3D PROMINENCE: Grab your 3D glasses! Astrophotographer Greg Piepol of Rockville, Maryland, has created a stereo anaglyph of this past weekend's spectacular solar prominence: