18 November 2008, 08:25 AM ET
The nitrogen and methane ice covering Eris could be the result of weather on the dwarf planet.
17 October 2008, 10:06 AM ET
A simulation shows how thunderstorms create jet streams on giant planets.
10 October 2008, 06:28 AM ET
Neptune is much too faint to be perceived without any optical aid.
18 August 2008, 11:01 AM ET
Astronomers have discovered a comet-like object lurking near Neptune's orbit.
31 July 2008, 06:41 AM ET
SETI invites scuba divers on an expedition to a destination of your choice.
10 July 2008, 06:34 AM ET
Could aliens be tuning into the most powerful radio transmitter on Earth?
31 December 2007, 07:00 AM ET
Our solar system may be home, but mysteries remain in its most distant corners.
18 December 2007, 06:05 AM ET
Swapping Neptune and Uranus could help explain solar system's formation.
02 November 2007, 07:11 AM ET
Neptune can be picked-up using just a good pair of binoculars.
18 September 2007, 01:17 PM ET
Neptune's warmer south pole responsible for methane hot spots.
19 July 2007, 11:59 AM ET
An extremely lopsided debris disk has been found with a thin needle shape.
30 January 2007, 06:01 AM ET
Neptune may be escorted in its orbit by thousands of asteroid-like objects, perhaps more than exist in the entire asteroid belt.
17 November 2006, 02:20 PM ET
15 June 2006, 02:05 PM ET
Three new rocky bodies have been detected in the same orbit as Neptune, bringing the total number of the gas giant's asteroid companions, or "Trojans," up to four.
17 May 2006, 01:00 PM ET
Three medium-sized planets of roughly the same mass as Neptune have been discovered around a nearby Sun-like star that contains an asteroid belt.
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.
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.
30 November 2005, 12:40 PM ET
Astronomer have discovered a planet about as massive as Neptune orbiting one of the most common types of stars in the universe.
31 August 2004, 01:00 PM ET
The planets are likely gaseous or
mixtures of ice and rock, but they might be barren
rock worlds like Mercury.