Friday, January 9, 2015

The chances of the emergence of life are especially high for heavy exoplanets – RIA Novosti

Artistic image of the ocean super-Earth

© David A. Aguilar (CfA)

MOSCOW, January 9 – RIA Novosti. Exoplanets, which is several times heavier than our Earth, may be too long to keep their water oceans, which greatly increases the chances of life on these super-Earths, say scientists from the Harvard – Smithsonian Center for Astrophysics (CFA).

 The release of the supermassive black hole at the center of the Milky Way

© Photo: NASA / CXC / Amherst College / D.Haggard et al

Geological evidence suggests that the Earth’s oceans have existed for almost the entire history of our world. Scientists from the CFA concluded that the oceans on super-Earths may exist for 10 billion years, not boil, thereby giving a great chance for life.

“When scientists determine whether an extrasolar planet in the habitable zone, they consider its distance from its star, and the temperature on the surface. But nevertheless, it is necessary to think about the availability of water of the oceans on the planet and there should carefully consider the super-Earth” – said study lead author Laura Schaefer of the CFA.

With the help of computer simulation model of treatment Schaefer created enormous amounts of water on extrasolar planets whose mass is several times larger than the Earth’s, and came to the conclusion that the planet, which is 4 times heavier than the Earth can do a lot better than our planet, save our oceans water.

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