Transit of Mercury
Mercury passed across the face of the sun this morning, an event which happens only a few times each century. The orbiting Solar and Heliospheric Observatory (SOHO) took the image above, in which Mercury can be seen at upper right, a small dark disk almost lost in the sun's glare. Click the image to see the full SOHO field. The SOHO folks are currently hosting an excellent collection of images, movies, and links relating to the transit at their Hotshots Gallery. That site is being hammered right now, but do have a look, it's well worth it. Also stay tuned to the Metafilter thread where some more good links are bound to be posted.