Astronomers have observed an object that originated from beyond our solar system, thought to be an interstellar comet, ...

Nicolaus Copernicus (1473-1543) would bring us from a geocentric universe to the heliocentric one, offering a very familiar, if incomplete, picture of our solar system.

The Solar System "family portrait" is the final series of 60 images captured by NASA's Voyager 1 that show six of our solar system's planets. The image represents the first time a spacecraft has ...

The Oort Cloud, an expanse of icy bodies in the far reaches of our solar system, is shown here in a scene from "Encounters in the Milky Way," a show at New York City's Hayden Planetarium that ...