12 December 2012, 01:10 PM ET
The hydrocarbon-filled river is more than 250 miles long, researchers say.
07 December 2012, 04:59 PM ET
Look up for three nights starting this Sunday to see the moon, Saturn and Spica together.
06 December 2012, 09:00 AM ET
The Discovery-class mission could be ready to launch by 2020, researchers say.
05 December 2012, 12:00 PM ET
See images of the ringed planet from NASA's Cassini spacecraft in orbit around Saturn.
28 November 2012, 06:44 PM ET
NASA's Cassini mission beamed back stunning imagery of a swirling storm on the ringed planet on November 27th, 2012.
26 November 2012, 06:47 AM ET
Saturn and Venus will bright and appear extremely close together in the pre-dawn Tuesday sky.
21 November 2012, 10:54 AM ET
Saturn and Venus will appear so close they can be seen in the same telescope view.
08 November 2012, 03:31 PM ET
Galileo discovered Io, Ganymede, Europa and Callisto, Jupiter’s four largest moons in 1610. Even today their varied characteristics fascinate astronomers. From giant volcanoes to sub-surface seas, Jupiter's moons are like planets unto themselves.
06 November 2012, 10:54 PM ET
Saturn's moon Mimas appears near Saturn, dwarfed by its parent planet in this space wallpaper.
06 November 2012, 05:22 PM ET
Saturn's gorgeous rings are on display alongside the tiny moon Mimas.
01 November 2012, 10:07 AM ET
This month will see Saturn and Venus come very close to one another in the night sky, the mid-month peak of the Leonid meteor shower, solar eclipse in Australia and more.
01 November 2012, 07:00 AM ET
Titan's glow works a little like a neon sign.
31 October 2012, 10:11 AM ET
The NASA spacecraft had delivered spectacular imagery of Saturn and its moons. It launched in 1997 and has been exploring the system since 2004.
28 October 2012, 01:10 AM ET
Storms can exist on any planet with an atmosphere, even the sun.
26 October 2012, 07:00 AM ET
The storm, which was first observed in December 2010, was even more powerful than researchers had thought.
25 October 2012, 11:07 AM ET
The Great White Spot storm on Saturn has set a record for the biggest temperature shift, according to planetary scientist Brigette Hesman working with NASA's Cassini spacecraft.
18 October 2012, 01:08 PM ET
The half-dozen icy satellites may have been spawned by a merger of bigger bodies that created Saturn's huge moon Titan.
17 October 2012, 07:00 AM ET
A NASA spacecraft has spied a cracked mound that resembles a hot cross bun on Saturn's moon Titan.
16 October 2012, 07:00 AM ET
Cassini will keep studying Saturn and its many moons until 2017.
12 October 2012, 10:00 AM ET
The findings are based on a new analysis of a nearly eight-year-old spacecraft landing.
11 October 2012, 05:54 PM ET
in 2005, the Huygens Probe took about 10 seconds to finally come to a rest on the surface of the Saturn Moon. 'Fluffy' dust-like material shot up off the surface for about 4 seconds after landing.
05 October 2012, 12:23 PM ET
Many astronomers and astrobiologists think that Titan – with its thick atmosphere of methane and liquid hydrocarbon lakes – could harbor some form of life. 50% larger than Earth’s moon and 80% more massive, Titan is an analog to the early Earth.
04 October 2012, 02:40 PM ET
Far from Earth and the inner solar system two massive gas giants patrol the outer reaches of our solar system; Uranus knocked on its axis and Neptune, wrapped in a cobalt blue atmosphere of inexplicably fast winds.
01 October 2012, 07:00 AM ET
A boat mission called TALISE would explore the lakes of Saturn's moon Titan.
28 September 2012, 03:32 PM ET
The Cassini probe snapped the shot this past June.
28 September 2012, 03:31 PM ET
Perhaps as old as the Solar System itself, Ganymede – the largest moon of any planet – is the only moon known to have a magnetic field.
28 September 2012, 03:12 PM ET
Locked beneath the icy surface of Europa is perhaps as much water as in all of Earth's oceans and lakes. But could there be life in the salty underground global sea?
28 September 2012, 11:16 AM ET
The rings of Saturn have captured human curiosity for centuries. But they aren't the only fascinating mysteries surrounding the sixth planet from the sun.
27 September 2012, 01:57 PM ET
By far the most massive planet in our solar system, Jupiter features giant hurricanes, auroras, abstract artistic cloudswirls, and maybe even a solid core. It also protects Earth by gravitationally clearing the solar system of asteroids and comets.
24 September 2012, 06:01 PM ET
Future missions hoping to explore Europa's ocean may have to dig very deep.
17 September 2012, 12:08 PM ET
Now's your chance to see Saturn before it disappears for a while.
14 September 2012, 02:00 PM ET
These real planets, moons and asteroids match anything imagined by George Lucas for the "Star Wars" universe.
13 September 2012, 12:29 PM ET
Many alien planets likely dip in and out of their stars' "habitable zones."
05 September 2012, 05:37 PM ET
Voyager 1's rocket only had 3.5 seconds of fuel left when it sent the probe on its way 35 years ago.
04 September 2012, 11:50 AM ET
This September skywatchers can catch a glimpse of four planets (Venus, Mars, Jupiter, and Saturn) as well as a visual trick in the constellation Capricornus that makes two stars look like one oddly enlongated star.
30 August 2012, 11:40 AM ET
Saturn's rings obscure part of Titan's colorful visage in this space wallpaper from NASA's Cassini spacecraft.