News tagged with planetary migration
The origin of the moon's craters
(PhysOrg.com) -- Moon's craters, together with samples of the surface returned during the Apollo program, tell the story of impacts from two different populations of small bodies. The first rocky collection ...
Space & Earth / Space Exploration
Mar 19, 2012 |
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Discovery of a Retrograde or Highly Tilted Extrasolar Planet
Astronomers have found that the extrasolar planet HAT-P-7b has a retrograde or highly tilted orbit. Studying such planets is important in understanding the diversity of planetary systems and assessing current ...
Nov 18, 2009 |
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Search results for planetary migration
Scientists measure Martian sand movement: Dune migration rates appear to be similar to those on Earth
Last year, images from NASA's Mars Reconnaissance Orbiter captured sand dunes and ripples moving across the surface of Mars—observations that challenged previously held beliefs that there was not a lot ...
Space & Earth / Space Exploration
May 09, 2012 |
5 / 5 (4) |
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Oceans apart: New research suggests that ocean-crust formation is a dynamic process
Three-fifths of Earth’s crust lies underwater, spread out along the seafloor. More than four cubic miles of ocean crust forms each year, constantly regenerating like new skin across the globe. This ocean ...
Space & Earth / Earth Sciences
Apr 10, 2012 |
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When stellar metallicity sparks planet formation
New research predicts the criteria needed for Earth-like planets to form around a star that have one-tenth the metallicity of our Sun. If researchers find small, rocky planets orbiting stars with lower metallicity, ...
Apr 10, 2012 |
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The earliest stages of planet formation
(PhysOrg.com) -- Small dust particles in a disk of gas around a young star, according to current models, gradually coagulate during the first million years until kilometer-sized objects are formed. These in ...
Mar 26, 2012 |
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A close-up view of Mercury: Researchers find the planet may have had a dynamic past
New observations from a spacecraft orbiting Mercury have revealed that the tiny, pockmarked planet harbors a highly unusual interior — and the craft’s glimpse of Mercury’s surface topography ...
Space & Earth / Space Exploration
Mar 22, 2012 |
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'Weather in a tank' demonstration helps students grasp fluid dynamics
Fluid dynamics plays a central role in determining Earth’s climate. Ocean currents and eddies stir up contents from the deep, while atmospheric winds and weather systems steer temperature and moisture around the globe. ...
Space & Earth / Earth Sciences
Mar 21, 2012 |
5 / 5 (2) |
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Some orbits more popular than others in solar systems
(PhysOrg.com) -- In young solar systems emerging around baby stars, some orbits are more popular than others, resulting in “planet pile-ups” and “planet deserts."
Mar 19, 2012 |
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Neptune on tiptoes
(PhysOrg.com) -- The formation and development of the solar system, long a topic of study for philosophers and scientists, is today often used as a case study for the formation and development of planetary ...
Mar 14, 2012 |
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The hills are evolving: New model predicts speed of spreading valleys
From high above the Florida Panhandle, the Apalachicola Bluffs -- a winding system of steep ravines -- look like the branching veins of a leaf.
Space & Earth / Earth Sciences
Feb 06, 2012 |
5 / 5 (3) |
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High planetary tilt lowers odds for life?
Highly-tilted worlds would have extreme seasons, subjecting life to alternating periods of scorching and subzero temperatures. This could make the development of all but hardiest, simplest creatures a long ...
Space & Earth / Space Exploration
Feb 06, 2012 |
4.6 / 5 (13) |
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List of search results for planetary migration
