Planets
- Planets
Evidence of a Wet Mars
An orbiter provides new details about when and where liquid water existed on Mars.
- Planets
Pluto’s New Moons
Astronomers have spotted two objects that may be previously unknown moons of Pluto.
- Planets
Saturn’s Spongy Moon
Close-up views of Saturn's moon Hyperion reveal a strangely cratered surface that looks spongy.
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- Planets
Cousin Earth
Astronomers have found a solid, Earthlike planet just 15 light-years beyond the solar system.
- 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.
