A massive solar tornado, big enough to swallow the Earth, was observed twirling across the surface of the "quiet" sun last week. Using a telescope made from second hand parts, including part of an old ...

The El Reno tornado, Joplin tornado and Tri-State tornado are among the biggest and most damaging twisters in U.S. history. Tornadoes can be more than a mile wide and have wind speeds greater than 300 ...