News tagged with solar system formation
UH scientists analyze a tiny comet grain to date Jupiter's formation
Particles from comet 81P/Wild 2 brought to Earth in 2006 by NASA's Stardust spacecraft indicate that Jupiter formed more than three million years after the formation of the first solids in our Solar System. ...
Mar 01, 2012 |
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Researchers say galaxy may swarm with 'nomad planets'
(PhysOrg.com) -- Our galaxy may be awash in homeless planets, wandering through space instead of orbiting a star.
Feb 23, 2012 |
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The water reservoir in a young planetary system
(PhysOrg.com) -- Astronomers once thought that the process of star formation was more-or-less controlled by the simple coalescence of material by gravity, leading eventually to a new star. But they have come ...
Nov 15, 2011 |
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Cosmic voyager has a layover in St. Louis
Last January two amateur meteorite hunters dropped by Randy Korotev's office at Washington University in St. Louis to show him their latest purchase, a 17-kilogram pallasite meteorite found in 2006 near Conception ...
Space & Earth / Space Exploration
Nov 10, 2011 |
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Stardust discovered in far-off planetary systems
Searching for extra-solar planets -- which are planets outside of our solar system -- is very popular these days. About 700 planets are known at the moment, a number that is continuously rising due to refined ...
Sep 29, 2011 |
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Rocky planets could have been born as gas giants
When NASA announced the discovery of over 1,200 new potential planets spotted by the Kepler Space Telescope, almost a quarter of them were thought to be Super-Earths. Now, new research suggests that these ...
Sep 16, 2011 |
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Measuring the clumpiness of proto-planetary disks
(PhysOrg.com) -- The process of star formation, once thought to involve just the simple coalescence of material under the influence of gravity, actually entails a complex series of stages, with the youngest ...
Jun 14, 2011 |
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Flipping hot Jupiters: Why some planets orbit the wrong way
(PhysOrg.com) -- In the last few years astronomers have observed that in some extrasolar systems the star is spinning one way and the planet, a "hot Jupiter," is orbiting the star in the opposite direction. ...
May 11, 2011 |
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Assumptions about exo-oceans
Some estimates indicate that 25% of Sun-like stars have Earth-like planets. A new study now shows that these planets are almost certain to have oceans if they are located in the right temperature zone around ...
Mar 04, 2011 |
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Oxygen isotope analysis tells of the wandering life of a dust grain 4.5 billion years ago
Scientists have performed a micro-probe analysis of the core and outer layers of a pea-sized piece of a meteorite some 4.57 billion years old to reconstruct the history of its formation, providing the first ...
Mar 03, 2011 |
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Back to the roots of the solar system
(PhysOrg.com) -- Planets form in disks of dust and gas that surround young stars. A look at the birth places means a journey into the past of the earth and its siblings. Now, astronomers have been able to ...
Feb 17, 2011 |
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Learning from hot Jupiters
The possibility of discovering a planet that is small, cool, rocky, orbiting a sunlike star and able to host life -- an Earth twin, in other words -- has made the search for planets outside of our solar ...
Dec 15, 2010 |
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The end of planet formation, as told by trace elements from the mantles of Earth, the moon and Mars
New research reveals that the abundance of so-called highly siderophile, or metal-loving, elements like gold and platinum found in the mantles of Earth, the Moon and Mars were delivered by massive impactors ...
Space & Earth / Space Exploration
Dec 09, 2010 |
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Brown Dwarf Found Orbiting a Young Sun-Like Star
(PhysOrg.com) -- Astronomers have imaged a very young brown dwarf, or failed star, in a tight orbit around a young nearby sun-like star. The discovery is expected to shed light on the early stages of solar ...
Jul 29, 2010 |
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Recipes for Renegade Planets
Recent discoveries of gas giant planets in unusual orbits challenge the generally accepted theory of planet formation. While these discoveries do not disprove the theory, they have opened our eyes to chaotic ...
Jul 08, 2010 |
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