Recent modeling of solar mass stars with planetary systems, found that a system with four rocky planets and four gas giants in stable orbits – and only a sparsely populated outer belt of planetesimals – has only ...
Astronomy
Apr 11, 2011
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The Gliese 581 system has been making headlines recently for the most newly announced planet that may lie in the habitable zone. Hopes were somewhat dashed when we were reminded that the certainty level of its discovery was ...
Astronomy
Oct 25, 2010
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(PhysOrg.com) -- There are now over 490 confirmed extrasolar planets. The vast majority are gas giants like Jupiter, but they are much stranger because many orbit close to their stars and so are much hotter than Jupiter (some ...
Astronomy
Oct 8, 2010
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Giant planet GJ 436b in the constellation Leo is missing something. Would you believe swamp gas?
Space Exploration
Sep 14, 2010
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(PhysOrg.com) -- Planets of the major type so far found outside our solar system are unlikely to have moons, according to new research reported in the August 20 issue of The Astrophysical Journal Letters.
(PhysOrg.com) -- As if the debate over what is and what is not a planet hasn't gotten confusing enough, Hubble Space Telescope astronomers have now confirmed the existence of a tortured, baked object that could be called ...
Astronomy
Jul 15, 2010
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(PhysOrg.com) -- Astronomers have snapped a picture of three planets orbiting a star beyond our own using a modest-sized telescope on the ground. The surprising feat was accomplished by a team at NASA's Jet Propulsion Laboratory ...
Astronomy
Apr 14, 2010
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Four billion years ago, our then stripling sun radiated only 70 to 75 percent as much energy as it does today. Other things on Earth being equal, with so little energy reaching the planet's surface, all water on the planet ...
Earth Sciences
Apr 6, 2010
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(PhysOrg.com) -- An international group of astrophysicists has determined that a massive planet outside our Solar System is being distorted and destroyed by its host star--a finding that helps explain the unexpectedly large ...
Astronomy
Feb 24, 2010
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(PhysOrg.com) -- Scientist explains how it may be possible for the planets Neptune and Uranus to contain liquid diamond oceans.
