Why do sunspots appear dark in pictures of the Sun?
The answer is B, they are bright but appear dark against the surrounding sun. They are magnetic storms which are cooler then the sun’s photosphere. That’s why they appear black. The sun gets even hotter and brighter the lower you go because it’s closer to the nuclear furnace at the center of the sun.
b. Details here: http://www.astronomycafe.net/qadir/q142.… http://csep10.phys.utk.edu/astr162/lect/… http://www.windows.ucar.edu/tour/link=/s… “If you could cut an average sunspot out of the Sun and place it in the night sky, it would be about as bright as a full moon.
