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.
02 February 2009, 08:08 AM ET
New images of Titan reveal the extent of methane lakes.
27 January 2009, 01:32 PM ET
Scientists push for a seven-year extension of the Cassini mission to Saturn.
30 December 2008, 08:19 PM ET
New pictures of Saturn released Tuesday reveal the ringed planet in all its splendor.
16 December 2008, 11:56 AM ET
Cassini's mission continues to uncover secrets of the ringed planet.
16 December 2008, 08:50 AM ET
Big news from Saturn's tiny moon Enceladus: It's likely that a salty ocean sloshes around beneath the icy surface.
02 December 2008, 08:35 AM ET
Mars' ultraviolet auroral lights have been mapped for the first time.
26 November 2008, 01:59 PM ET
Astronomers looking at the spectacular supersonic plumes of gas and dust shooting off one of Saturn's moons say there are strong hints of liquid water, a key building block of life.
25 November 2008, 04:05 PM ET
Computer simulations get up close to Jupiter's core.
12 November 2008, 01:01 PM ET
Cassini spacecraft photographs new aurora at Saturn's pole.
06 November 2008, 07:54 AM ET
Mission would use an orbiting spacecraft, a surface probe, and a hot air balloon.
29 October 2008, 04:24 PM ET
Nine mementos are riding to Pluto aboard NASA's New Horizons spacecraft.
17 October 2008, 10:06 AM ET
A simulation shows how thunderstorms create jet streams on giant planets.
16 October 2008, 05:06 PM ET
New observations of Mars' moon Phobos show the object is more like a pile of rubble than a single solid body.
16 October 2008, 06:56 AM ET
Tardigrades' survival in space gives more credence to the panspermia idea.
13 October 2008, 02:31 PM ET
Giant cyclones swirl on Saturn's north and south poles.
10 October 2008, 06:28 AM ET
Neptune is much too faint to be perceived without any optical aid.
09 October 2008, 06:59 AM ET
Cynthia Phillips strolls the surfaces of distant planets each day.
09 October 2008, 06:56 AM ET
Eight years from now, the Juno spacecraft will arrive at Jupiter.
08 October 2008, 04:19 PM ET
A NASA probe is set to make the closest flyby yet of an icy Saturnian moon.
03 October 2008, 06:54 AM ET
This week will be a fine time to seek out planet Uranus.
02 October 2008, 06:57 AM ET
A team of astronomers found two moons around an intriguing asteroid.
22 September 2008, 08:00 PM ET
Saturn's rings may be much older and more massive than previously thought, according to a new study.
05 September 2008, 01:16 PM ET
Cassini finds new ring arc, confirms another orbiting with two of Saturn's moons.
02 September 2008, 06:32 AM ET
A planetary map-mapmaker targets Mercury and the moons of Saturn.
28 August 2008, 06:34 AM ET
A new method of exploring thick icy sheets and below them has been devised.
22 August 2008, 06:43 AM ET
Recently, three planets have been clustered rather closely together.
15 August 2008, 04:32 PM ET
Cassini spots sources of icy plumes on Enceladus.
14 August 2008, 06:50 AM ET
Reactions on Titan may create molecules similar to some on the early Earth.