With just under a week to go, The CW has released an official poster for the upcoming four-part "Crisis on Earth-X" crossover event, featuring a look at even more of the Earth-X baddies. Come take ...

Yes, there are "tornadoes" on the sun, and now astronomers think they don't spin like their Earth-based cousins do, according to new research. Giant solar tornadoes — also known as prominences ...