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.
30 December 2005, 06:47 AM ET
There is plenty to see, and SPACE.com provides an overview of the planets for the coming year.
29 December 2005, 07:27 AM ET
European space scientists started the year by celebrating the history-making descent of their Huygens probe through the atmosphere of Titan and ended it by wondering how to fit future missions into a budget that will keep up with inflation, but no more, t
22 December 2005, 03:21 PM ET
Astronomers have discovered new rings and small moons around Uranus and found surprising changes in satellite orbits around the giant planet.
19 December 2005, 06:44 AM ET
A swath of space beyond Neptune is getting stranger all the time as astronomers find an ever-more diverse array of objects, orbits and groupings.
02 December 2005, 01:11 PM ET
NASA announced two new cash prizes Friday, each with a weighty $250,000 purse, in a pair of contests aimed at developing robotic systems for space exploration.
30 November 2005, 05:11 PM ET
A new series of reports from Huygens reveals more of Titan's secrets.
28 November 2005, 07:00 AM ET
Ever since Voyager 1 returned detailed images of Saturn's F ring back in 1980, astronomers have struggled to understand its bizarre features.
31 October 2005, 01:01 PM ET
Two small moons have been discovered orbiting Pluto, bringing the planet's retinue of known satellites to three and leaving scientist to wonder how it could be.
21 October 2005, 06:48 AM ET
Vandenberg Air Force Base is a sprawling space and missile hub, located on California's Central Coast. It is home base for an evolving story of “missilering” at its best, along with carrying out spacelift operations from the Cold War to today’s developmen
20 October 2005, 10:28 AM ET
The mighty Titan -- a pillar in American rocketry for five decades -- flew into orbit for the final time Wednesday, capping a distinguished career of heavy-lifting that has spanned the nation's space age.
30 September 2005, 01:09 PM ET
New Cassini images of Saturn's moons Hyperion and Tethys.
17 September 2005, 02:02 PM ET
A long-sought feature on the smoggy moon suggest a sea and rivers of methane or other hydrocarbons.
15 September 2005, 07:00 AM ET
The Cassini spacecraft orbiting Saturn has finally spotted spokes cutting across the planet’s rings, a phenomenon astronomers have long hoped their plucky orbiter might find.
13 September 2005, 06:25 AM ET
Recent findings from NASA’s Cassini spacecraft and new discoveries about organisms here on Earth that thrive in extreme conditions are causing scientists to rethink the possibility that there may be life on Saturn's cloudy moon Titan.
10 September 2005, 07:10 PM ET
Phobos and Deimos are seen cutting across the martian night sky.
17 August 2005, 02:20 PM ET
New Cassini data reveals that Saturn’s rings have their own oxygen atmosphere.
15 August 2005, 06:22 AM ET
The recent discovery of a hot spot on Saturn's moon Enceladus could explain an old mystery, but it also presents a new puzzle of its own.
08 August 2005, 02:08 AM ET
Proponents of small satellites say that tiny spacecraft have potentially big roles to play in planetary exploration.
26 July 2005, 06:18 AM ET
Rare occultation may reveal new information on Pluto’s moon Charon.
28 June 2005, 02:32 PM ET
You might have thought Saturn's moon Titan was a somewhat dead issue after the Cassini spacecraft did not find convincing evidence for methane seas that scientists had predicted would exist.
24 June 2005, 06:41 AM ET
Saturn, Venus and Mercury gather for an eyecatching sight.
14 June 2005, 06:42 AM ET
BOULDER, Colorado – In the wake of the success if the Cassini mission to Saturn, there is overwhelming support for dispatching a spacecraft to Jupiter’s moon, Europa – an ice-covered world that may support an ocean, possibly teeming with life. Another hig
08 June 2005, 01:07 PM ET
Scientists think they've spotted a source of Titan's methane.
07 June 2005, 07:00 AM ET
Most television science fiction shows fling humans out to the vast reaches of the galaxy, but "Voyage to the Planets and Beyond" is content with exploring our own planetary backyard.
25 May 2005, 01:00 PM ET
New computer model finds possible reason behind an ancient bombardment of the Moon, plus neatly explains how the giant planets came to travel their current paths.
25 May 2005, 12:09 PM ET
Saturn reflects X-rays from solar eruptions, astronomers said today. Previous observations found the same phenomenon at Jupiter.
06 May 2005, 05:43 AM ET
Both planets are bright and easy to find in the evening sky.
11 April 2005, 12:38 AM ET
The final Titan rocket to fly from Cape Canaveral, originally scheduled for this past weekend, is searching for a new launch date after encountering trouble with balky ground equipment.
11 March 2005, 04:59 PM ET
Scientist aren't sure what the interiors of Jupiter and Saturn
look like or how the planets formed. But a new study of their insides
suggests they took starkly different paths to giant status.
07 March 2005, 05:01 AM ET
Planets may form in stable rings that develop in the swirling, turbulent gas disks around young stars.
01 March 2005, 06:29 AM ET
A host of new images and data reveal new rings, possible moons, and oxygen in the planet's rings.
16 February 2005, 01:00 PM ET
Researchers expected Saturn's aurora to have characteristics in between the lights of Earth and Jupiter. Instead, they found some surprises.