Tag Archives: NASA
The Dumbbell Nebula (M27)
Closest match to Earth yet: Kepler-22b
NGC 7822 in Cepheus
Smiley in the Sky
NGC 7380: The Wizard Nebula
Messier 81 aka Bode’s Galaxy
Heart Nebula
Sunspotting
Sunspots are “holes” in the surface of the Sun, the visible counterparts of magnetic flux tubes in the Sun’s convective zone that get “wound up” by differential rotation. Although temperature in the dark area is decreased, it’s still around 4000°C and the spots would glow brighter than an electrical arc if you could isolate them […]