Jan 28 2011
Ocean on Saturn’s Moon Full of Gas
The fizzy ocean on Enceladus may be capable of harboring life.
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Dec 10 2010
Venus Has a Moon?
It was thought to be alone, but Venus is being stalked by a "quasi-satellite."
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Sep 08 2010
Asteroids Zipping by Earth at Less Than Moon’s Distance
A couple of uncomfortably close brushes with asteroids today underscores the need for a plan to avoid asteroid strikes.
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Sep 03 2010
Tether Maneuvers Spacecraft Without Fuel
The technology pushes against Earth's magnetic field for propulsion.
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Sep 01 2010
A Traffic Cop for Satellites
Satellite crashes may be rare, but when they happen, the impact can be long-lasting.
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Aug 17 2010
Moons of ‘Hot Jupiter’ Planets Unlikely to Exist
Giant planets have been detected in distant solar systems but most of these planets could not have Earth-like moons.
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Jul 30 2010
Dance of the Planets Gets Intimate
This cosmic ballet is reshaping what astronomers thought was possible in solar systems beyond our own.
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Jul 28 2010
DIY Kit Puts Satellites Into Orbit for $8,000
For extreme hobbyists, the new kit offers a chance to launch personal projects into space.
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Jul 27 2010
Solar Probes Dispatched to Moon
Two space probes are given a new lease on life after being rerouted for a mission to unravel the composition of the moon.
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Jul 02 2010
Far-Out World Leaves Astronomers Baffled
The mysterious planet-like object is circling its star at a distance roughly 300 times farther than Earth orbits the sun.
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