Whirlwind, a general term for any whirling body of air. The term is most often applied to whirling air created by the swift rising of warm air from near the surface of the earth. Whirlwinds include the "dust devils" that may be seen moving across a field or along a dirt road on a hot day, and the waterspouts of tropical seas.
Every day, astronomers unravel a little more of the universe's inner workings, but the jury is still out on 95 percent of its contents.
Eros is 21 miles long and 8 miles thick -- a mini planet! Explore the mission that landed on this asteroid after orbiting it for a year!