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Scientists discover 7 earth-sized exoplanets around nearby star(1/2)

2017-02-23 08:59 Xinhua Editor:Li Yan
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The illustration released by NASA on Feb. 22, 2017 shows the artist's concept of what the TRAPPIST-1 planetary system may look like, based on available data about the planets' diameters, masses and distances from the host star. A compact analogue of our inner solar system about 40 light years away from the Earth has been discovered, NASA announced during a press conference on Wednesday. An international team of astronomers using powerful space telescopes and ground-based observatories have discovered the first known system of actually seven Earth-sized planets orbiting the nearby TRAPPIST-1, which is relatively close to us, in the constellation Aquarius. And three of these planets are firmly located in the habitable zone, the area around the parent star where a rocky planet is most likely to have liquid water. (Xinhua/NASA/JPL-Caltech)

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