The Myriad Planets of the Galaxy


At one time there was serious debates that planets were a rare phenomena, few and far between. Our Milky Way galaxy contains a minimum of 100 billion planets, according to a detailed statistical study based on the detection of three planets located outside our solar system, called exoplanets. The discovery, to be reported in the January 12 issue of Nature, was made by an international team of astronomers, including co-author Stephen Kane of NASA’s Exoplanet Science Institute at the California Institute of Technology in Pasadena, Calif. The survey results show that our galaxy contains, on average, a minimum of one planet for every star. This means that it’s likely there are a minimum of 1,500 planets within just 50 light-years of Earth.


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