Planets
- Planets
Saturn’s Spongy Moon
Close-up views of Saturn's moon Hyperion reveal a strangely cratered surface that looks spongy.
By Emily Sohn - Planets
An Icy Blob of Fluff
Firing a projectile into a comet has exposed an icy dirtball.
By Emily Sohn - Planets
A Smashing Display
A space probe slams into a comet and sends up a mighty cloud of dust.
By Emily Sohn - Planets
Cousin Earth
Astronomers have found a solid, Earthlike planet just 15 light-years beyond the solar system.
By Emily Sohn - 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.
By Emily Sohn - Planets
Sounds of Titan
A space probe touches down on an alien, but eerily familiar world and samples its music.
By Emily Sohn - Planets
Unveiling Titan
A space probe that landed on Saturn's frigid moon Titan found a landscape that looks a lot like Earth.
By Emily Sohn - Planets
Icy Orbs at the Solar System’s Edge
A ring at the solar system's outskirts appears to contain smaller objects than expected.
By Emily Sohn - 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.
By Emily Sohn - Planets
Planet Hunters Nab Three More
Astronomers have spotted three Neptune-size planets outside our solar system.
By Emily Sohn - Planets
Saturn’s New Moons
The Cassini spacecraft has found evidence of lightning and two tiny moons orbiting the ringed planet.
By Emily Sohn