Astronomers have identified a vast, twisting chain of galaxies that appears to be rotating as a single structure, a kind of ...

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 ...

A team of astronomers studying the distribution of galaxies in nearby space has discovered something truly extraordinary: a ...