Although our solar system doesn't contain gas giants with thick atmospheres enriched with helium, observations by NASA's Spitzer Space Telescope suggests the galaxy may be strewn with these planetary oddities.
New research suggests that the frozen cores of 'mini-Neptunes' could be transformed into habitable worlds with a little help from their red dwarf hosts.
Our solar system has a handful of bodies exhibiting some strange, highly elliptical orbits. Are they being pulled by a massive planet WAY out there beyond Neptune? Amy Shira Teitel examines what might be causing these objects to behave so oddly.
Here on Earth, diamonds are rare and valuable. And forever, if you're a James Bond fan. A few planets in our friendly little solar systems might be flush with them -- it might even be raining diamonds on the gas giants Saturn and Jupiter!
The discovery of a Uranus-like planet orbiting a very distant star could tell us a great deal about our own ice giants.
For the first time, astronomers have announced the discovery of an exoplanet that they believe could resemble our solar system's 'ice giants' Uranus or Neptune. Continue reading →
A Neptune-size planet beyond the solar system has telltale traces of water vapor in its atmosphere, making it the smallest exoplanet known to have the wet stuff yet, scientists say.
Armchair astronomers can enjoy a cosmic double play tonight (Aug. 29), with back-to-back webcasts featuring faraway Neptune and a close-flying asteroid.
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