Space
- Space
Killers from Outer Space
A newly revised scale rates the risk that an asteroid may crash into Earth and wipe out life as we know it.
- Planets
Solving a Sedna Mystery
Astronomers are learning more about the most-remote object known in the solar system.
- Space
Return to Space
NASA is readying the space shuttle Discovery for its first launch in more than 2 years.
- Space
Super star cluster in the neighborhood
Astronomers have spotted an amazingly compact grouping of stars in the Milky Way.
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- Planets
Sounds of Titan
A space probe touches down on an alien, but eerily familiar world and samples its music.
- Space
Black hole journey
Research on weird, invisible objects called black holes might help explain how the universe began.
- 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.
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- Space
A dusty birthplace
Evidence of separate bands of dust suggests the presence of a planet orbiting a young star.
