From < http://www.foxnews.com/weather/2017/02/22/7-earth-sized-planets-discovered-orbiting-nearby-star-could-harbor-liquid-water/ > On February 22, NASA announced the discovery of a new system: seven planets orbiting a star. This star is called TRAPPIST-1 and is 39 light-years away. All of the planets are earth-sized. Scientists believe they may contain liquid water. “This discovery could be a significant piece in the puzzle of finding habitable environments, places that are conducive to life,” said Thomas Zurbuchen, associate administrator of the agency’s Science Mission Directorate in Washington. “Answering the question, ‘are we alone?’ is a top science priority and finding so many planets like these for the first time in the habitable zone is a remarkable step forward toward that goal.” Nevertheless, these planets would be hard to explore because they are far away, indeed. The spacecraft that reached Pluto, New Horizons, would take 800,
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