SUNSET: 
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Results of Nearby-Supernova AstroAlert Test
Our February 2003 AstroAlert test went very well. Here we report on what we learned, thanks to the enthusiasm and dedication of the test's participants.
TEST - Possible Galactic Supernova!
In February 2003, Sky & Telescope and the SuperNova Early Warning System (SNEWS) conducted a test of the AstroAlert system. Here's what it looked like.
Our Stormy Sun
As one naked-eye sunspot group rotates off the disk, another swings into view to take its place. Both active regions continue to spawn flares and other energetic explosions.
