Space
- Space
Surprise ions
A high-flying satellite reveals a crowd of charged particles in the magnetosphere.
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- Space
Mapping the invisible
Astronomers don’t know what dark matter is, but they have mapped where it’s hiding.
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- Planets
Europa’s watery underworld
Jupiter’s smooth, icy moon may hide giant lakes beneath the surface.
- Planets
A shock to the solar system
Scientists suspect a nearby exploding star ignited the formation of the sun and planets.
- Planets
Ripples in one of Saturn’s rings
Scientists study pattern created by 600-year-old comet crash.
- 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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