It’s Spring in the Northern Hemisphere, and that means the Sun is back. But it’s more than just a free heat lamp for your garden, it’s an incredible, dynamic nuclear reaction complete with flares, coronal mass ejections, twisting magnetic fields and the solar wind
Cheap Astronomy goes around and around the issue of orbital mechanics
Daily sunspot records have been kept by most major observatories since the mid-1800s and there are records going back thousands of years of these dark areas on the Sun’s face.
ALMA starts observing the sun. more at #365DaysofAstro @unawe #spacescoop
How do sunspots work? What do magnetic fields have to do with it?