30 November 2006, 08:13 AM ET
As we search for extraterrestrial life, Earth in some sense always provides our framework. The data indicate that life does in fact exist on this planet, and it existed here sometime before about 3.5 billion years ago (give or take a couple hundred milli
17 November 2006, 02:14 PM ET
09 November 2006, 02:59 PM ET
NASA's Cassini spacecraft has seen something never before seen on another planet -- a hurricane-like storm at Saturn's south pole with a well-developed eye, ringed by towering clouds.
08 November 2006, 06:04 AM ET
The Cassini spacecraft is roughly halfway through its looping voyage of the Saturn system and is continuing to return a bounty of data on the ringed planet and its moons. Yet all journeys must have an end and Cassini's eventual fate is now being discussed
02 November 2006, 10:41 AM ET
HONOLULU (AP) – Scientists studying the atmosphere of Saturn's moon, Titan, hope their research will reveal clues about the nature of Earth's atmosphere billions of years ago.
11 October 2006, 05:13 PM ET
NASA scientists discover two new rings around Saturn, and think the planet’s missing moons could be lurking nearby.
11 October 2006, 01:08 PM ET
Titan’s surface could be covered by dusty dunes composed of ethane and smog particles.
31 August 2006, 02:54 PM ET
The shadow cast by a moon as it floated through space above the blue-green cloud tops of Uranus was recently captured for the first time by NASA's Hubble Space Telescope.
28 July 2006, 11:55 AM ET
One of the major goals of NASA's Cassini mission was to find lakes or seas on Saturn's moon Titan. Now scientist say they've found lakes.
19 July 2006, 04:47 PM ET
New radar images of Saturn's moon Titan reveal dunes, hills, valleys and rivers that scientist say look a lot like home.
30 June 2006, 07:19 PM ET
CAPE CANAVERAL, Fla. – NASA’s next rockets to reach towards the Moon and Mars finally have a name: Ares.
09 June 2006, 03:10 PM ET
Two bright planets are approaching each other in our evening sky.
05 June 2006, 11:35 AM ET
They look like planets but are born like stars. And now astronomers say these planemos have the material needed to form satellites. Yes, it's all very confusing.
31 May 2006, 03:05 PM ET
Saturn's moon Enceladus might have rolled over on its side sometime in the past, a suggestion that would account for a strange finding made by the Cassini spacecraft.
30 May 2006, 04:19 PM ET
Something remarkable is about to happen in the evening sky. Three planets and a star cluster are converging for a close encounter you won't want to miss.
10 May 2006, 01:06 PM ET
Neptune's largest moon, Triton, was originally a member of a duo orbiting the Sun and was kidnapped in a close encounter with Neptune, a new model suggests.
09 May 2006, 12:44 AM ET
Europe’s Huygens probe was quite alone when it set down on the surface of Saturn’s moon Titan, but two new videos based the landing allows viewers to hitch a ride during the spacecraft’s descent.
03 May 2006, 01:07 PM ET
By measuring a mysterious magnetic field signal emanating from Saturn, scientists might have finally pinned down how long a day on the gas giant planet is.
28 April 2006, 06:19 AM ET
There are now three "superior" planets that are readily visible in our early evening spring sky: Mars, Saturn and Jupiter.
06 April 2006, 02:39 PM ET
The outermost ring of Uranus is bright blue
04 April 2006, 06:44 AM ET
Like auroras on Earth, the light shows on Jupiter and Saturn are partly caused by the Sun’s solar winds. It was previously thought that Jovian auroras were mostly due to ejected material from Jupiter’s volcanic moon Io being churned up by the planet’s rap
03 April 2006, 06:54 AM ET
The discovery of apparent liquid water reservoirs erupting in Yellowstone-like geysers on Saturn’s moon Enceladus has produced a gusher of questions.
29 March 2006, 12:37 PM ET
Oddly shaped gaps hint at "moonlets" and support the theory that the rings are the broken remains of an icy moon shattered long ago.
28 March 2006, 07:10 AM ET
As a new computer model highlights the troubles with forming gas giants using the standard model, scientists are exploring alternatives and devising ways to test their theories in the future.
23 March 2006, 06:47 AM ET
We can now list eight worlds (including Earth) in a nine-planet solar system that are possible places for life.
16 March 2006, 03:23 PM ET
The formation of odd spokes in Saturn’s rings may depend on the amount of sunlight striking the planet’s ring plane, scientists said Thursday.
14 March 2006, 01:07 PM ET
HOUSTON, Texas – A leading planetary scientist said that Titan, one of Saturn’s moons, should be targeted for a new round of outer planet exploration.
10 March 2006, 12:46 PM ET
The color of Pluto’s two recently discovered satellites are essentially the same neutral color as Pluto’s large moon, Charon. The finding supports the theory that all three of Pluto’s moons were formed from a single giant impact that took place about 4.6
09 March 2006, 12:57 PM ET
Saturn’s moon Enceladus, one of the brightest objects in the Solar System, may have pockets of liquid water lurking beneath its surface feeding great jets that spew from the satellite, hinting at the possibility of a habitable environment, researchers sai
01 March 2006, 04:15 PM ET
The Cassini spacecraft studying Saturn and its satellites made the first of four planned Titan flybys Tuesday in a search for subsurface oceans.
14 February 2006, 01:51 PM ET
The storm is larger than the continental United States, with electrical activity 1,000 times stronger than the lightning on Earth.
07 February 2006, 06:59 AM ET
New discoveries made over the past few decades have forced scientists to expand their definition of a circumstellar habitable zone, the region around a star where liquid water and life can exist.
31 January 2006, 06:23 AM ET
The new computer model will help scientists predict where and when large seasonal clouds will appear and disappear across the moon, enabling them to plan productive future observations of the hazy moon.
26 January 2006, 11:04 PM ET
About halfway up in the east-southeast sky around 9 p.m. local time these frosty winter nights is the brilliant planet Saturn. This week, the ringed world is at its brightest for 2006, reaching a magnitude of -0.2.
04 January 2006, 01:00 PM ET
A new study provides the best estimate to date of the diameter and heft of Pluto’s moon Charon and suggests the satellite likely has no atmosphere.