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Search results for planetesimals

Astronomy Feb 3, 2011

'Marstinis' could help explain why the red planet is so small

Mars is a small planet. In fact, for scientists who do solar system modeling, the planet is too small. “This is an outstanding problem in terrestrial planet formation,” said Dr. David Minton from the Southwest Research ...

Astronomy Jan 28, 2011

Binary planetesimals

(Âé¶¹ÒùÔºOrg.com) -- In fewer than ten million years, the material in the disk around a young star will either be accreted on to its star, dispersed into the interstellar medium, or converted into planets or smaller solid bodies. ...

Space Exploration Dec 17, 2010

Earth's final growth spurt

What led to water on the interior of the Moon or the formation of the Borealis basin that covers 40 percent of the surface of Mars? And what caused at least some of Earth’s tilt — without which there would be no ...

Astronomy Dec 13, 2010

First four exoplanet systems imaged

Among one of the first exoplanet systems imaged was HR 8799. In 2008, a team led by Christian Marois at the Herzberg Institute of Astrophysics in Canada, took a picture of the system directly imaging three giant planets. ...

Space Exploration Dec 9, 2010

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 during the final ...

Astronomy Dec 8, 2010

First carbon-rich exoplanet discovered

(Âé¶¹ÒùÔºOrg.com) -- A team led by a former postdoctoral researcher in MIT's Department of Earth, Atmospheric and Planetary Sciences and the MIT Kavli Institute for Astrophysics, recently measured the first-ever planetary atmosphere ...

Earth Sciences Dec 8, 2010

Study suggests that trace amounts of water created oceans on Earth, other terrestrial planets

One question that has baffled planetary scientists is how oceans formed on the surface of terrestrial planets like Earth — rocky planets made of silicate and metals. It’s believed that in additionzq to Earth, the ...

Astronomy Sep 16, 2010

Water around massive young stars

Water is critical to human life, but also plays an important role in the life of stars and their planetary systems. As a gas, water helps to cool collapsing clouds of interstellar material so that they can form new stars.

Astronomy Jun 8, 2010

New national telescope at La Silla

A new robotic telescope has had first light at ESO's La Silla Observatory, in Chile. TRAPPIST (TRAnsiting Planets and PlanetesImals Small Telescope) is devoted to the study of planetary systems through two approaches: the ...

Space Exploration Mar 25, 2010

Dynamo theory: How small planets can have self-sustaining magnetic fields

The Earth's global magnetic field is generated in its metallic core, located nearly 3,000 kilometers beneath the planet’s surface. The field has existed on Earth for at least 3.5 billion years and offers clues about how ...

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