Interstellar material has been discovered in our solar system, but researchers continue to hunt for where it came from and ...

Astronomers have identified a quartet of small rocky planets orbiting Barnard's star - one of our closest stellar neighbors - ...

Early in our Solar System’s history, bits of icy debris were scattered and then gradually coaxed into a spiral alignment in the Oort Cloud.

Long after the planets of the Solar System formed, catastrophic collisions continued, with a climax about 4 billion years ago during an interval called the Late Heavy Bombardment. The scars of ...

Most solar companies set the price according to the solar system's wattage. A solar installation's “cost per watt” is a little like the “price per square foot” when you buy a house.