Planets
- Planets
Chaos Among the Planets
The screwball travels of four giant planets may have reshaped the early solar system.
- Planets
Solving a Sedna Mystery
Astronomers are learning more about the most-remote object known in the solar system.
- Planets
Sounds of Titan
A space probe touches down on an alien, but eerily familiar world and samples its music.
- Planets
Unveiling Titan
A space probe that landed on Saturn's frigid moon Titan found a landscape that looks a lot like Earth.
- Planets
Icy Orbs at the Solar System’s Edge
A ring at the solar system's outskirts appears to contain smaller objects than expected.
- Planets
A very distant planet says “cheese”
A small red spot may be the first picture ever taken of a planet outside the solar system.
- Planets
Planet Hunters Nab Three More
Astronomers have spotted three Neptune-size planets outside our solar system.
- Planets
Saturn’s New Moons
The Cassini spacecraft has found evidence of lightning and two tiny moons orbiting the ringed planet.
- Planets
Ringing Saturn
The Cassini spacecraft has arrived at Saturn to start exploring the planet and its rings and moons.
- Planets
Witnessing a Rare Venus Eclipse
On June 8, Venus will cross in front of the sun for the first time since 1882.
- Planets
Search for a Missing Moon
Sedna, the most distant object known in the solar system, doesn't appear to have a moon.
- Planets
Planets on the Edge
The discovery of a strange, planetlike object beyond Pluto adds to the puzzle of how the solar system formed.
