Monday, January 30, 2012

Discovered 11 new planetary systems

The hunter of planets, NASA's Kepler space telescope, discovered in the Milky Way 11 new planetary systems that host a total of 26 planets.

They are found in the Milky Way and all orbit very close to their host stars, closer than the distance between Venus Fifteen of these from the Sun 'alien worlds' have size between the Earth and Neptune, others have a radius larger than Jupiter. Further observations will be needed, say experts, to determine which of these planets are rocky like Earth and what instead, they often atmospheres of gas like Neptune.

Some have orbits very fast, takes six days to complete one rotation around the star, some take 143 days. ''Before the Kepler mission, we knew about extrasolar 500''noted Doug Hudgins, who works at NASA's Kepler mission. ''Now - he added - in just two years by setting a bit of heaven, not much 'bigger than a fist, Kepler has discovered more than 60 planets and most' of 2,300 candidates planets.

This tells us that our galaxy is full of planets orbits of all sizes.'' Kepler planet candidates identified by measuring repeatedly dimming of more than 150,000 stars to detect when a planet passes in front of the star, a technique known as transits. ''Confirmation that the small decrease in brightness of the star is due to a planet requires further observations and analysis of long''said Eric Ford, University of Florida and among the authors of the discovery

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