
Hubble Finds New Neptune Moon: Smallest Known Moon in the Neptunian System
NASA's Hubble Space
Telescope has discovered a
new moon orbiting the
distant blue-green planet
Neptune, the 14th known to
... > full story

First Transiting Planets in a Star Cluster Discovered
All stars begin their lives
in groups. Most stars are
born in small groups that
quickly fall apart. Others
form in huge, dense swarms,
where stars jostle with
... > full story

Weather on the Outer Planets Only Goes So Deep
What is the long-range
weather forecast for the
giant planets Uranus and
Neptune? These planets are
home to extreme winds
blowing at speeds of over
... > full story

At Least One in Six Stars Has an Earth-Sized Planet, Analysis Finds
The quest for a twin Earth
is heating up. Using NASA's
Kepler spacecraft,
astronomers are beginning to
find Earth-sized planets
... > full story
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Do Missing Jupiters Mean Massive Comet Belts?
November 27, 2012 Astronomers have discovered vast comet belts surrounding two nearby planetary systems known to host only Earth-to-Neptune-mass worlds. The comet reservoirs could have delivered life-giving oceans to ... > full story -
Voyager at 35: Break on Through to the Other Side
August 20, 2012 Thirty-five years ago Aug. 20, NASA's Voyager 2 spacecraft, the first Voyager spacecraft to launch, departed on a journey that would make it the only spacecraft to visit Uranus and Neptune and the ... > full story -
Unseen Planet Revealed by Its Gravity
May 10, 2012 More than a 150 years ago, before Neptune was ever sighted in the night sky, French mathematician Urbain Le Verrier predicted the planet's existence based on small deviations in the motion of Uranus. ... > full story -
NASA's Spitzer Sees the Light of Alien 'Super-Earth'
May 8, 2012 NASA's Spitzer Space Telescope has detected light emanating from a "super-Earth" planet beyond our solar system for the first time. While the planet is not habitable, the detection is a historic step ... > full story -
Looking for Earths by Looking for Jupiters
May 7, 2012 In the search for Earth-like planets, it is helpful to look for clues and patterns that can help scientist narrow down the types of systems where potentially habitable planets are likely to be ... > full storyMore: -
As Voyager 1 Nears Edge of Solar System, Scientists Look Back
December 13, 2011 In 1977, Jimmy Carter was sworn in as president, Elvis died, Virginia park ranger Roy Sullivan was hit by lightning a record seventh time and two NASA space probes destined to turn planetary science ... > full story -
Giant Planet Ejected from the Solar System?
November 10, 2011 Just as an expert chess player sacrifices a piece to protect the queen, the solar system may have given up a giant planet and spared the Earth, according to a new ... > full story -
Series of Bumps Sent Uranus Into Its Sideways Spin, New Research Suggests
October 6, 2011 Uranus' highly tilted axis makes it something of an oddball in our solar system. The accepted wisdom is that Uranus was knocked on its side by a single large impact, but new research rewrites our ... > full story -
'Invisible' World Discovered: Planet Alternately Runs Late and Early in Its Orbit, Tugged by Second Hidden World
September 8, 2011 Usually, running five minutes late is a bad thing since you might lose your dinner reservation or miss out on tickets to the latest show. But when a planet runs five minutes late, astronomers get ... > full story -
New Planets Feature Young Star and Twin Neptunes
July 14, 2011 Scientists have discovered 10 new planets. Amongst them is one orbiting a star perhaps only a few tens of million years old, twin Neptune-sized planets, and a rare Saturn-like ... > full story
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