News tagged with dust grains

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The earliest stages of planet formation

( -- 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 turn coalesce ...

dateMar 26, 2012 in Astronomy
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Spiral arms cradle baby terrestrial planets

New work from Carnegie's Alan Boss offers a potential solution to a longstanding problem in the prevailing theory of how rocky planets formed in our own Solar System, as well as in others. The snag he's untangling: how dust ...

dateJun 25, 2015 in Astronomy
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ALMA reveals workings of nearby planetary system

A new observatory still under construction has given astronomers a major breakthrough in understanding a nearby planetary system that can provide valuable clues about how such systems form and evolve. The scientists used ...

dateApr 12, 2012 in Astronomy
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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, it may ...

dateApr 10, 2012 in Astronomy
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Interstellar dust and the sun

(—The space between stars is not empty. It contains copious but diffuse amounts of gas and dust; in fact about 5-10% of the total mass of our Milky Way galaxy is in interstellar gas. About 1% of the mass of this ...

dateNov 12, 2012 in Astronomy
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