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?

This mission will employ an advanced rover and landing technologies on Mars.

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.

Photo of a meteor taken from the International Space Station.

This is a rectangular version of a self-portrait of NASA's Mars rover Curiosity.

It seems the Cassini spacecraft has found its valentine.

Mineral maps from the Thermal Emission Spectrometer on Mars Global Surveyor ...

This artist's impression shows the change in observed atmospheric effects on ...

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.