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.
15 May 2009, 03:57 PM ET
You can watch the shadows of Jupiter's four largest Moons pass across the face of the planet.
11 May 2009, 06:07 AM ET
We've known that Saturn has rings for 4 centuries. But only now are we unraveling the mysteries of how they formed; what they're made of; how long they'll last; why they're so bright... "Bad Astronomy's" Phil Plait explains.
09 May 2009, 12:21 PM ET
In August, the rings will disappear for a while.
07 May 2009, 11:02 AM ET
While Cassini is probing Saturn and its moons, it is beaming home some stunning images.
23 April 2009, 11:13 AM ET
Unexpected X-ray behavior of Jupiter and Saturn. This video is available as a podcast available from: chandra.harvard.edu
17 March 2009, 10:49 AM ET
A new Hubble photograph captured a rare alignment of four of Saturn's moons lining up in front of their planet.
17 March 2009, 07:56 AM ET
Hubble has captured a rare celestial alignment where several of the moons of Saturn can be seen passing across the face of the ringed planet. [Story]
12 March 2009, 04:16 PM ET
Cassini is now using backup propulsion thrusters on its extended tour of Saturn.
06 March 2009, 09:46 AM ET
The 10 most groundbreaking science missions NASA's ever sent to space.
04 March 2009, 09:34 AM ET
Cassini images moonlet in ring arc of tenuous outer G ring.
26 February 2009, 09:31 AM ET
Missing asteroids may be the handiwork of rampaging giant planets.
23 February 2009, 08:51 AM ET
Four of Saturn's many moons will cross the ringed planet's face Tuesday morning.
18 February 2009, 12:09 PM ET
A look and the proposed joint NASA-ESA mission to send a fleet of spacecraft to Saturn and its shrouded moon Titan.
18 February 2009, 10:55 AM ET
NASA and Europe are pushing ahead with ambitious new missions to Jupiter and Saturn.
13 February 2009, 11:14 AM ET
This month you'll have an opportunity to see all five naked-eye planets.