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

"This is the 5th largest planet in our solar system, lurking out there, waiting to be found," the Caltech astronomer says. For about a decade, he and other researchers have been trying to prove ...

NEW YORK — A new Tatooine-like planet outside the solar system may orbit two failed stars ... A light year is nearly 6 trillion miles. The brown dwarf pair was first spotted years ago.

A new study suggests we could be a step closer to figuring out if alien life is out there, trillions of miles away from Earth ...

Astronomers have spotted a small rocky planet that orbits perilously close to its host star disintegrating as its surface is ...