A erupted with M1 and M6 class solar flares. Watch the fireworks in these views from NASA's Solar Dynamics Observatory.
Sunspot AR3842 erupted with an X7.1-class solar flare. NASA models predict that the coronal mass ejection created by the ...
The dramatic Marley Foundation Astronomy Discover Center at Lowell Observatory in Flagstaff has a rooftop viewing deck and ...
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