Two "Earth-like" exoplanets are mirages
The Point.fr - Published 04/07/2014 13:03 - Amended 04/07/2014 at 1:38 p.m.
Researchers estimate that Gliese 581 d and Gliese 581 g, it was thought of living space, are mere illusions created by the activity of a star.
Around the star Gliese 581, there would be no planet potentially habitable finally.
Around the star Gliese 581, there would be no planet potentially habitable finally. © NOTIMEX
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THE POINT.FR (SOURCE AFP)
Highlights of Point.fr
Two exoplanets, astronomers believed that some potentially habitable, were nothing more than illusions created by the activity of a star, American researchers revealed Thursday. Gliese 581 d and Gliese 581 g, which, according to calculations by astronomers, would have found twenty-two light years (one light year equals 9,460 billion kilometers) from Earth in the "Goldilocks zone" (earrings gold), that is to say in a zone close enough and far enough so that their star water can exist there. And which, moreover, the temperature and the atmosphere have been conducive to the occurrence of life and to its evolution. At the time of the announcement of his "discovery" in 2010, Gliese g, had even been described as the exoplanet "more comparable" to the Earth that has been detected so far.
http://droidmonster.webs.com/apps/blog/show/42534870-the-indus-dolphin-is-endangered
https://mysquidoolenses.wordpress.com/2014/07/31/fertilizing-dust-from-the-sahara/
http://myandroidstuff.tumblr.com/post/93392029279/ebola-liberia-partially-closes-its-borders
Too far away from our planet to be observed with the naked eye or through a telescope, the two exoplanets have been detected around the star Gliese 581 by examining the spectrum of the latter. Now astronomers from the Pennsylvania State University believe that Gliese 581 d and Gliese 581 g were not planets, but the signals sent by the star. "According to our research, the two planets which everyone speaks unfortunately not exist," said Suvrath Mahadevan, co-author of the study published in the journal Science . "What was initially seen as the signals sent by the planets was actually caused by stellar activity," he said. In other words, the magnetic fields of sunspots or could have disrupted the reading signals made by astronomers. Scientists had "discovered" six exoplanets around Gliese 581, but by spreading the existence of Gliese g and - and that of a third, Gliese f - there are only about three, none of which are finally habitable.
Visit our dossier: The hunt for exoplanets exceptional
The Point.fr - Published 04/07/2014 13:03 - Amended 04/07/2014 at 1:38 p.m.
Researchers estimate that Gliese 581 d and Gliese 581 g, it was thought of living space, are mere illusions created by the activity of a star.
Around the star Gliese 581, there would be no planet potentially habitable finally.
Around the star Gliese 581, there would be no planet potentially habitable finally. © NOTIMEX
Subscribe
from € 1
THE POINT.FR (SOURCE AFP)
Highlights of Point.fr
Two exoplanets, astronomers believed that some potentially habitable, were nothing more than illusions created by the activity of a star, American researchers revealed Thursday. Gliese 581 d and Gliese 581 g, which, according to calculations by astronomers, would have found twenty-two light years (one light year equals 9,460 billion kilometers) from Earth in the "Goldilocks zone" (earrings gold), that is to say in a zone close enough and far enough so that their star water can exist there. And which, moreover, the temperature and the atmosphere have been conducive to the occurrence of life and to its evolution. At the time of the announcement of his "discovery" in 2010, Gliese g, had even been described as the exoplanet "more comparable" to the Earth that has been detected so far.
http://droidmonster.webs.com/apps/blog/show/42534870-the-indus-dolphin-is-endangered
https://mysquidoolenses.wordpress.com/2014/07/31/fertilizing-dust-from-the-sahara/
http://myandroidstuff.tumblr.com/post/93392029279/ebola-liberia-partially-closes-its-borders
Too far away from our planet to be observed with the naked eye or through a telescope, the two exoplanets have been detected around the star Gliese 581 by examining the spectrum of the latter. Now astronomers from the Pennsylvania State University believe that Gliese 581 d and Gliese 581 g were not planets, but the signals sent by the star. "According to our research, the two planets which everyone speaks unfortunately not exist," said Suvrath Mahadevan, co-author of the study published in the journal Science . "What was initially seen as the signals sent by the planets was actually caused by stellar activity," he said. In other words, the magnetic fields of sunspots or could have disrupted the reading signals made by astronomers. Scientists had "discovered" six exoplanets around Gliese 581, but by spreading the existence of Gliese g and - and that of a third, Gliese f - there are only about three, none of which are finally habitable.
Visit our dossier: The hunt for exoplanets exceptional
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