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Search results for planetesimals

Astronomy Jan 26, 2007

Terrestrial Planet Formation in Binary Star Systems

The list of confirmed extrasolar planets keeps growing, and has now passed two hundred members — almost all of which are gas giants like Jupiter and Saturn. But the hunt is on for Earth-like worlds! With the successful ...

Astronomy Jun 27, 2006

Hubble Reveals Two Dust Disks Around Nearby Star

NASA's Hubble Space Telescope has revealed two dust disks circling the nearby star Beta Pictoris. The images confirm a decade of scientific speculation that a warp in the young star's dust disk may actually be a second inclined ...

Astronomy Jun 7, 2006

Mysterious carbon excess found in infant solar system

Astronomers detected unusually high quantities of carbon, the basis of all terrestrial life, in an infant solar system around nearby star Beta Pictoris, 63 light-years away.

Mar 30, 2006

Simulation Tracks Planetary Evolution

Two British astronomers have constructed a computer simulation that tracks how giant protoplanets tend to form and migrate inward toward their central star.

Mar 21, 2006

The locked migration of giant protoplanets

In an article to be published in Astronomy & Astrophysics, two British astronomers present new numerical simulations of how planetary systems form. They find that, in the early stages of planetary formation, giant protoplanets ...

Mar 19, 2006

'Hot Jupiter' Systems may Harbor Earth-like Planets

The catalogue of confirmed extrasolar planets ('exoplanets') is growing rapidly. There are currently approximately 133 known planetary systems, harboring a total of 156 exoplanets as of January 2006*. With regard to the search ...

Feb 8, 2006

Spitzer Uncovers Hints of Mega Solar Systems

NASA's Spitzer Space Telescope has identified two huge "hypergiant" stars circled by monstrous disks of what might be planet-forming dust. The findings surprised astronomers because stars as big as these were thought to be ...

Feb 1, 2006

Binary asteroid in Jupiter's orbit may be icy comet from solar system's infancy

A bound pair of icy comets similar to the dirty snowballs circling outside the orbit of Neptune has been found lurking in the shadow of Jupiter. Astronomers at the University of California, Berkeley, working with colleagues ...

Jan 25, 2006

Icy exoplanet brings astronomers closer to home

Major Scientific Discovery on Extrasolar Planets Using a relatively new planet-hunting technique that can spot worlds one-tenth the mass of our own, researchers have discovered a potentially rocky, icy body that may be the ...

Sep 21, 2005

Deep Impact Comet May Have Formed in Giant Planets Region

Comet Tempel-1 may have been born in the region of the solar system occupied by Uranus and Neptune today, according to one possibility from an analysis of the comet's debris blasted into space by NASA's Deep Impact mission. ...

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