The 500th Alien Planet Discovered -"Finding a Second Earth Could Happen Anytime Now": NASA/Harvard Teams

Last week a 21st-century miles was reached: Planet hunters discovered the 500th planet beyond our solar system.  To be sure, the vast majority are hot, Jupiter-sized planets that would dwarf the Earth and are almost certainly lifeless. Over the past 15 years, the count of these extrasolar worlds, has soared from single digits to the dozens and then into the hundreds. The pace of discovery is now so rapid that the number of identified planets leaped from 400 to 500 entries in just over a year... Read More

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