Planetary Science
- Planetary Science
Far-out science
New measurements show that the planetoid Sedna spins more rapidly than earlier observations had suggested.
By Ron Cowen - Planetary Science
The Huygens Chronicles
After several months of painstaking work analyzing data from the Huygens probe, planetary scientists are able to see the surface of Saturn's moon Titan in greater detail than ever before.
By Ron Cowen - Planetary Science
Comet mission loses some focus
A camera aboard the Deep Impact spacecraft, set to fire a projectile into the icy heart of Comet Tempel-1 on July 4, is slightly out of focus.
By Ron Cowen - Planetary Science
A Martian haven for life?
Images taken by two Mars spacecraft suggest that a volcano on the Red Planet erupted long ago at the confluence of two riverbeds, indicating that the region had two of the prequisites for life: heat and water.
By Ron Cowen - Planetary Science
A moon with atmosphere
Magnetic measurements by the Cassini spacecraft have revealed that Saturn's moon Enceladus has a tenuous atmosphere containing water vapor.
By Ron Cowen - Planetary Science
Dusty rejuvenation
The Mars rover Spirit recently had its dirty solar arrays cleaned off, possibly by a dust devil, allowing the craft to generate nearly as much energy as it did when it first landed on the Red Planet in January 2004.
By Ron Cowen - Planetary Science
Assault on Mars
A Mars rover has discovered a patch of soil that's the saltiest place known on the Red Planet, an indication that water once coursed through the region.
By Ron Cowen - Planetary Science
Jupiter as mirror for the sun’s X rays
X rays emanating from Jupiter's midriff actually originate on the sun, new observations show.
By David Shiga - Planetary Science
Saturn says ‘cheese’
Astronomers have assembled the largest and most-detailed global portrait of the ringed planet ever made.
By Ron Cowen - Planetary Science
Slowpoke: Atmosphere put brakes on meteorite that formed famed crater
The extraterrestrial object that gouged out Arizona's Meteor Crater about 50,000 years ago struck at a speed much slower than most scientists had previously proposed.
By Sid Perkins - Planetary Science
Martian Landscaping: Spacecraft eyes evidence of a frozen sea
After analyzing images taken by the orbiting Mars Express spacecraft, researchers reported that a flat region near the Red Planet's equator holds a frozen ocean that was once the size of the North Sea.
By Ron Cowen - Planetary Science
Spying Saturn’s Light Show: Anomalous aurora dazzles scientists
The dancing lights that paint Saturn's sky stands out from all other auroras observed in the solar system.
By Ron Cowen