Jupiter is rivaled only by the sun in its influence on our solar system.

Saturn's stunning rings are one of the intriguing mysteries of this giant world.

The sun-scorched innermost planet in an intriguing world of extremes.

This dim world of intense heat and volcanic activity is Earth gone awry.

Mars may have once been a wet world like Earth. Where did the water go?

The Juno spacecraft will, for the first time, see below Jupiter's dense clouds.

Voyager 1 and 2 took advantage of a rare planetary alignment to conduct a historic tour of the outer solar system and build enough velocity to...

Cassini has been unlocking the secrets of Saturn, its rings, moons and magnetosphere since 2004. It is currently on an extended mission.

New Horizons is the first mission to explore Pluto and the Kuiper Belt.

Ulysses was the first mission to survey the space environment above and below th

A Pioneer Venus 2 probe descends through Venus' intense atmosphere.

Vesta appears in a splendid rainbow-colored palette in new images.

Earth's horizon and a greenish phenomenon associated with Aurora Australis.

This graphic gives a summary of our best current understanding of the evolution of stars, showing their birth,...

A diagram showing solar system orbits. The highly tilted orbit of Eris is in red.

Most recent update: November 2009.

Exploring other worlds stretches our minds and excites our imaginations.

Most recent update: November 2009.

NASA's plans for the exploration of the solar system over the next 30 years.

This is the latest planetary science decadal study.