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 ringsand moons since 2004.

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

The first being to travel to outer space was a dog.

Hubble shows the newly discovered planet, Fomalhaut b, orbiting its parent star.

A technician checks the soil sampler of Viking 1.

This view of Jupiter's moon Europa features several regional-resolution mosaics.

This map traces where Curiosity drove between landing and sol 123.

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.