Jupiter is the largest planet in the solar system. It's about 11 times wider than Earth with an equatorial diameter of 88,846 ...

If you thought planets only circled stars in neat, flat disks, think again. Scientists have uncovered compelling evidence for ...

Almost 10 years ago, a NASA spacecraft was able to take several photos of Pluto, known for decades as a planet before it was ...

In a memorable image from the 1977 film "Star Wars," the young hero Luke Skywalker gazes at two suns setting above the ...

The AP is solely responsible for all content. A new "Tatooine-like" planet outside the solar system may orbit two failed stars, scientists reported Wednesday. Related video above: The dark energy ...