Monday, October 13, 2014

'Saturn on Steroids': 1st Ringed Planet Beyond Solar System Possibly Found


AUSTIN, Texas – An enigmatic object detected five years ago in space may be a ringed alien world comparable to Saturn, the first such world discovered outside our solar system, scientists now say.

An artist's illustration of a dust disk resembling Saturn's rings found around an object 420 light-years from Earth.
An artist's illustration of a dust disk resembling Saturn's rings found around an object 420 light-years from Earth. It may be the first alien planet with rings actually found. The find was announced, Jan. 11, 2012
CREDIT: Michael Osadciw/University of Rochester



The finding, announced here yesterday (Jan. 11) at the 219th meeting of the American Astronomical Society, came from studying an unsteady eclipse of light from a star near the mysterious body.
"After we ruled out the eclipse being due to a spherical star or a circumstellar disk passing in front of the star, I realized that the only plausible explanation was some sort of dust ring system orbiting a smaller companion — basically a Saturn on steroids," said study co-author Eric Mamajek of Cerro Tololo Inter-American Observatory in Chile and the University of Rochester.
The find occurred as astrophysicists investigated the Scorpius-Centaurus association, the nearest region of recent massive star formation to the sun, using the international SuperWASP (Wide Angle Search for Planets) and All Sky Automated Survey (ASAS) projects. Specifically, the researchers analyzed how light from sunlike stars in Scorpius-Centaurus varied over time.

Date: 12 January 2012 Time: 07:47 AM ET
    

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