A stunning photo has captured all seven of our neighboring planets in Earth's sky at the same time, possibly for the first ...

It's unlikely you'll be able to walk outside and see a line of planets, but according to NASA, a seven-planet parade happening tonight could be visible in some form in parts of the U.S. The upcoming ...

Did you miss the last planetary alignment in January? Well, you're in luck. The next one is on Feb. 28 and is viewable from ...