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The first exoplanet with climate "mild" USAF

"It could be the Rosetta Stone in the study of exoplanets' is

COROT-9B, about 1,500 light years from Earth

A reconstruction of Corot-9b as it passes in front of its star (AFP)

LONDON - It was discovered the first planet outside the solar system with a temperate climate and a surface temperature not too different compared to that of the planets in our solar system. The article reports a appeared in Nature an international research group coordinated by the Institute of Astrophysics of the Canary Islands and take part in Italy too, with Mauro Barbieri astronomer at the University of Padua. "COROT-9b is the first extrasolar planet that resembles the solar system," said study coordinator, Hans Deeg.

Rosetta Stone PLANETARY - According to one of the authors, Claire Moutouère the Astrophysics Laboratory of Marseille, the planet "could be the Rosetta Stone in the study of extrasolar planets." Because, as explained Didier Queloz of the University of Geneva, "COROT-9b can provide tools to study the atmospheres of planets with moderate temperatures and can allow us to open a new window into understanding the chemistry at low temperatures. Combining the observations made by the European COROT satellite with those of the "hunter" of planets Harps installed on the European Southern Observatory telescope at La Silla in Chile, astronomers have studied for the first time in detail the first "normal" extrasolar planet.

ORBIT - CoRoT-9b orbiting a Sun-like star located about 1,500 light-years from Earth. About the size of Jupiter, the planet has an orbit of 95 days, similar to that of Mercury. According to his calculations, the surface temperature is between -20 and +160 degrees Celsius. As our giant planets, Jupiter and Saturn, CoRoT-9b is composed mostly of hydrogen and helium, and could contain 20 Earths.

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