11 December 2009, 10:17 AM ET
The Martian moons Phobos and Deimos have been photographed in the same frame for the first time.
10 December 2009, 02:03 PM ET
New data from NASA's Cassini satellite helps explain the bizarre yin-yang appearance of Saturn’s moon Iapetus, where one side is dark and the other is bright.
09 December 2009, 05:14 PM ET
Hexagonal shape at Saturn's north pole emerges from winter.
09 December 2009, 11:47 AM ET
This three-frame movie shows a mysterious hexagon shape on Saturn that scientists think is the result of a meandering jet stream.
02 December 2009, 06:35 AM ET
From trillions of icy ring dust particles, finer than baker's flour, to more than 60 moons, each a unique world, the kingdom of Saturn is rich with mystery.
24 November 2009, 03:11 PM ET
As on Earth, electrical fields above Saturn interact with atmospheric chemicals to produce shimmering lights above the polar regions.
24 November 2009, 09:35 AM ET
The first video of auroras above the Saturn reveals the tallest
known "northern lights" in the solar system, flickering in shape and
04 November 2009, 11:48 AM ET
New striking photos of water-vapor geysers shooting off of Saturn’s moon Enceladus were taken by NASA’s Cassini spacecraft in orbit around the planet.
02 November 2009, 09:22 AM ET
Cassini spacecraft sees long night for Saturn's rings during planet's equinox.
20 October 2009, 04:51 PM ET
Amateur astronomers have a chance to celebrate one of the greatest space discoveries of all time.
20 October 2009, 09:44 AM ET
New color maps of Saturn's five innermost moon show interesting color patterns.
19 October 2009, 08:13 AM ET
Venus, Saturn and the Moon rising together just before sunrise at Bretagne, France.
14 October 2009, 07:36 AM ET
Researchers are designing a mission to sail an unmanned, nuclear-powered capsule on Saturn's moon Titan.
13 October 2009, 08:50 AM ET
The Cassini spacecraft spotted plumes of water vapor erupting from the south pole of Saturn’s moon Enceladus. The discovery has set off a heated debate over whether this tiny frigid moon has an ocean beneath the ice.
07 October 2009, 09:32 AM ET
Enormous new ring found distantly orbiting Saturn; likely source of moon's dark side.
30 September 2009, 07:47 AM ET
29 September 2009, 01:24 PM ET
Night Sky column for September 25.
28 September 2009, 08:55 AM ET
Water is all over the solar system and the rest of the galaxy. What's it mean to the search for life?
25 September 2009, 11:02 AM ET
The recent discovery of water molecules on the moon could make our celestial neighbor a more attractive candidate for a future manned mission.
24 September 2009, 02:24 PM ET
23 September 2009, 06:17 PM ET
Observations from three spacecraft show signal of water across moon's surface.
21 September 2009, 06:49 PM ET
Stunning new views of Saturn's rings from the Cassini spacecraft have revealed odd ripples as tall as the Rocky Mountains.
14 September 2009, 09:42 PM ET
Lightning storm on Saturn becomes longest continually observed storm in solar system.
08 September 2009, 08:50 AM ET
NASA released new pictures of Neptune’s freezing moon Triton, made from data taken by the Voyager 2 spacecraft on its way out of the solar system in 1989.
28 August 2009, 02:17 PM ET
An unusual celestial vanishing act will take place the night of Sept. 2 when all four of Jupiter's largest moons will be hidden from our view.
24 August 2009, 06:42 AM ET
Scientists are still uncovering the mystery behind the origins of each of Saturn's proud rings.
12 August 2009, 01:07 PM ET
Storm clouds were spotted in the usually-clear tropical latitudes of Saturn's moon Titan.
10 August 2009, 09:01 AM ET
In a celestial feat any magician would appreciate, Saturn will make its wide but thin ring system disappear from our view Aug. 11.
06 August 2009, 02:03 PM ET
Weather and surface processes on Titan are Earth-like but in much colder environment.
25 June 2009, 08:33 AM ET
A new study has found that hydrocarbon lakes on Titan could be good hosts for a certain type of chemistry that could lead to life.
24 June 2009, 01:03 PM ET
Saturn's sixth largest moon could support an ocean beneath its icy surface.
22 June 2009, 05:40 PM ET
As Saturn approaches its equinox — when the sun passes through the plane of the planet's rings — NASA's Cassini spacecraft has captured rare scenes of moons eclipsing each other and casting long shadows against the rings.
22 June 2009, 08:55 AM ET
First: The shadow of Saturn's moon Tethys seems to disappear as it crosses the planet's rings. Second: As Saturn's moon Enceladus eclipses its neighbor Mimas, Cassini records a scene possible only around the time of Saturn's approaching equinox.
09 June 2009, 10:52 AM ET
Saturn's moon Titan will be a little cloudier this year than forecasted.
28 May 2009, 11:49 AM ET
Large planets, like Saturn and Jupiter, could reflect activity on the Sun that we can see directly. But they also make and scatter their own X-rays. Podcast available from: chandra.harvard.edu
15 May 2009, 04:56 PM ET
New "Star Trek" movie relied on a veteran planetary scientist to get the science right.