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$moderation: “Billions of Earth-like Planets will have Chemical Makeups that Create Strange Worlds” — “There could be billions of Earthlike planets in the Universe but a great majority of them may have a totally different internal and atmospheric structure. Building planets in chemically non-solar environments (which are very common in the Universe) may lead to the formation of strange worlds, very different from the Earth! The amount of radioactive and some refractory elements (especially Si) may have drastic implications for planetary processes such as plate tectonics and volcanic activity,” says Garik Israelian, one of the team members of a new study. Israelian is an astrophysicist who led the team which found the first observational evidence that supernova explosions are responsible for the formation of black holes. The study of the photospheric stellar abundances of the planet-host stars is the key to understanding how protoplanets form, as well as which protoplanetary clouds evolve planets and which do not. These studies, which have important implications for models of giant planet formation and evolution, also help us to investigate the internal and atmospheric structure and composition of extrasolar planets.. Theoretical studies suggest that carbon/oxygen and magnesium/silicon ratios, are the most important elemens in determining the mineralogy of terrestrial planets, and they can give us information about the composition of these planets. (via dailygalaxy)$

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moderation:

“Billions of Earth-like Planets will have Chemical Makeups that Create Strange Worlds”

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“There could be billions of Earthlike planets in the Universe but a great majority of them may have a totally different internal and atmospheric structure. Building planets in chemically non-solar environments (which are very common in the Universe) may lead to the formation of strange worlds, very different from the Earth! The amount of radioactive and some refractory elements (especially Si) may have drastic implications for planetary processes such as plate tectonics and volcanic activity,” says Garik Israelian, one of the team members of a new study. Israelian is an astrophysicist who led the team which found the first observational evidence that supernova explosions are responsible for the formation of black holes.

The study of the photospheric stellar abundances of the planet-host stars is the key to understanding how protoplanets form, as well as which protoplanetary clouds evolve planets and which do not. These studies, which have important implications for models of giant planet formation and evolution, also help us to investigate the internal and atmospheric structure and composition of extrasolar planets..

Theoretical studies suggest that carbon/oxygen and magnesium/silicon ratios, are the most important elemens in determining the mineralogy of terrestrial planets, and they can give us information about the composition of these planets.

(via dailygalaxy)

Source: dailygalaxy.com