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NASA: Kepler-20 System! 5 Planets Including Two Earth-size

Posted: December 21st, 2011 | Author: | Filed under: NASA, National Aeronautics Space Administration, SPACE | Tags: , , , | Comments Off on NASA: Kepler-20 System! 5 Planets Including Two Earth-size

NASA Kepler 20F Render

NASA Astronomers say that for the first time they have spotted two Earth-sized worlds orbiting a Sun-like star, in another big advance in the search for the study of so-called exoplanets.

One of the planets is just 3 per cent bigger than Earth and the other is 13 per cent smaller, which would make it a bit smaller than Venus, they reported online in the British science journal, Nature. The planets are inferred to have a rocky composition similar to Earth’s but they orbit so close to their star, Kepler-20, that the temperature is likely to be far too high to nurture life.

The larger planet, Kepler-20f, completes a “year” in 19.5 days and may have a thick water-vapour atmosphere, while Kepler-20e zips around the star in just 6.1 days. Read the full article »»»»