Space
- Space
Burst busters
A powerful type of explosion in outer space is much more common, but not always as powerful, as astronomers had thought.
- 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.
- Space
Older Stars, New Age for the Universe
The oldest stars appear to be about a billion years older than astronomers had estimated.
- 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.
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- Planets
Rover Makes Splash on Mars
A robot on Mars has gathered evidence that liquid water once flowed on the Red Planet.
- Space
Strange Universe: The Stuff of Darkness
Figuring out what's hidden in outer space between the visible stars and galaxies isn't easy.
- Planets
Roving the Red Planet
Two little robots have touched down on Mars, ready to study the planet's rocks and soil.
- Planets
Catching a Comet’s Tail
A closeup visit by a NASA spacecraft helps show how a comet gets its shape.
- Space
Sun Flips Out to Flip-Flop
The sun may reverse its magnetic field by blasting charged particles into space.
