aurora

The big sunspot tossed out a CME and the arrival expected late Wednesday (Sept. 6), with G-2 and G-3 storms Wednesday and Thursday. After the CME arrives, auroras will likely appear over places such as Alaska, Scandinavia, Iceland, and Greenland, and perhaps even northern-tier US states from...

CORONAL HOLE TURNS TOWARD EARTH: A large coronal hole is turning toward Earth, and it is spewing a stream of high-speed solar wind. NOAA forecasters expect the stream to reach our planet on Sept. 28-29 with a 50% chance of G1-class geomagnetic storms when it arrives. At this time of year, even a...

Aurora over Icelandic Fault Image Credit & Copyright: Juan Carlos Casado (TWAN, Earth and Stars) The above image is from NASA's Astronomy Picture of the Day here. I love how much of this aurora was captured. You can find the larger resolution version of this image here. Here is the full...