Earth's magnetic field is still reverberating from a series of CME-hits this week. Another hit could be in store if this morning's X7-flare sent a CME toward Earth. Sky watchers, remain alert for auroras.

Sunspot 720 is huge--about as wide as the planet Jupiter. On Wednesday, Jan. 19th, Don Brown took this picture of the sun rising over Park City, Utah. The giant 'spot is clearly visible:

"This is an exellent case of a mostly photographic aurora--a deep reddish glow visible to the camera but not to the unaided eye," says Schur. "It started in the northern sky after midnight, and as the Kp index grew to 7 by early morning, the glow increased in size to more than 35 degrees over the northern horizon."
Above information thanks to spaceweather.com