Auriga, a constellation in the northern celestial hemisphere. The name means "The Charioteer." Capella, the brightest star in Auriga, is the sixth brightest star in the night sky. The handle of the Little Dipper points toward Auriga.
When you think about massive, mysterious cosmic bodies like accretion disks, the water swirling around your bathtub probably isn't the first thing to come to mind. But hey, physics works the same magic on all scales.
Sunspots are peculiar dark areas that show up regularly on the surface of the sun -- and often for no reason. What causes them? What effect could these funny little spots have on the Earth?