Sloshing Inside Earth Changes Protective Magnetic Field
A changing magnetic field could expose satellites to damaging radiation storms.
Space Plane Prototype Suffers Anomaly in Launch Test
NASA Gets First Image of a Mars Dust Particle
Huge Comet Discovered
Milky Way's Halo Loaded with Star Streams
First Japan-built Commercial Satellite Launched by Ariane 5
The Great (and Sometimes Serious) Debate About Pluto
Cassini Spots Icy Jet Sources on Saturn Moon
Titan's Ice Volcanoes Might Produce Stuff of Life
New Video: Coming Soon: The Final Flight to Hubble
Image of the Day: Moonraker
NEW VIDEO: Falcon 1's Third Flight
SpaceX's third rocket launch attempt ends in failure with an in-flight stage collision. Credit: SpaceX.