March 12, 2007: When scientists announce they're about to calibrate their instruments, science writers normally put away their pens. It's hard to write a good story about calibration. This may be the exception.
On Feb. 25, 2007, NASA scientists were calibrating some cameras aboard the STEREO-B spacecraft and they pointed the instruments at the sun. Here is what they saw:
The rest of the story, including an awesome video of the event, can be found