Space
- Planets
Double sunsets on a distant world
Astronomers discover for the first time a planet circling two stars.
- Space
Wanted: Garbage collectors in space
Scientists say we should clean up the cosmos now to avoid crashes in the future.
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- Planets
Possible new saltwater stains on Mars
Dark streaks that grow in spring, fade in winter may point to saltwater on the Red Planet.
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- Space
End of an era
As NASA’s space shuttles land for the last time, they leave behind a sound scientific legacy.
- Space
The dark side of the universe
Most of the cosmos is invisible, but that doesn’t stop scientists from searching for it.
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- Planets
The growing planetary family
At least 1,200 added to list of possible planets beyond the solar system.
- Space
When the universe began … again
Physicists suggest maybe the Big Bang was the latest of many bangs.
