529 reactions · 76 shares | THE MOST ACTIVE SUNSPOT IN YEARS:...

The Sun: Abundant Sunspot Activity | NASA’s Solar Dynamics Observatory FriendsofNASA.org: An abundance of sunspot groups are present on the visible solar disk—at least 12 active regions. Sunspots are areas that appear dark on the surface of the Sun. They appear dark because they are cooler than other parts of the Sun’s surface. Solar flares are a sudden explosion of energy caused by tangling, crossing, or reorganizing of magnetic field lines near sunspots. The southern solar hemisphere has the m