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 ...

This space wallpaper is an orbit diagram for the outer solar system. The sun and terrestrial planets are at the center. The orbits of the four giant planet Jupiter, Saturn, Uranus and Neptune are ...

Our understanding of the solar system is a work in progress. Pluto’s demotion to a dwarf planet was just one of many revisions—in recent decades astronomers have cataloged new dwarfs, like far ...

Missing The solar system once had five giant gaseous planets rather than the four it has today. That's the conclusion from a computer simulation of the solar system's evolution, which suggests the ...

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 ...