Virgo, a constellation and the sixth sign of the zodiac. The name means the virgin. The constellation contains Spica, a bright double star. In northern latitudes, Virgo is visible in the evening during the spring and early summer.
Although other planets have rings, none are as spectacular as Saturn's. What makes the planet's stratified rings, and how did they get there in the first place?
Doomsday theorists might expect 2012 to be a year of ray-gun-style solar flares, but their assumptions aren't at all backed up by science. What are solar flares, and what happens if they really do hit the Earth?