17 billion exoplanets discovered in the Universe


09/01/2013

Astrophysicists have determined that the universe in the sixth almost every star there is an extrasolar planet similar to Earth. Type of exoplanets with virtually nothing to do with the type of star around which they commit rotation. Earth-like planet, as they note, ever find in systems of different stars.

"In fact, the planet like our own are everywhere" - said Francois Fresson of the Harvard-Smithsonian Center for Astrophysics at the meeting of the American Astronomical Society.

Space observatory "Kepler" makes discoveries in the universe, using tranzistny method. By analyzing the light coming from the star, the telescope in brightness can detect the presence of the planet: if the brightness periodically falls, it means that the star can rotate the planet. Fixing this phenomenon, ground-based telescopes begin to validate the information obtained from orbit.

Thus, scientists have come to the conclusion that the universe about 17% of the stars have extrasolar planets the size of 0.8 - 1.25 in his system. Of these, one-fifth of bodies contain super-Earths, whose mass reaches the two masses of the Earth, and only 5% of the stars - it’s the owners of the gas giants.

Telescope "Kepler" to orbit the Earth was launched in March 2009. During the first 16 months of operation it was discovered about 2,400 candidates for extrasolar planets, of which 105 were confirmed by independent groups of researchers.


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