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Narrator: NASA's Kepler Mission has discovered the
美國航空航天局 開普勒任務 發現了
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first near-Earth-size planet orbiting in the
第一顆跟地球的大小相似的星球圍繞著
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habitable zone of a star very similar to our Sun.
一顆與太陽相似,位於適居帶內的行星
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Located about 1,400 light-years from Earth in the
距離地球約1400光年
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constellation of Cygnus, the newly discovered
位於天鵝座,這個新發現的
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planet resides in the Kepler-452 system.
星球位於開普勒452體系裡。
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The planet, called Kepler-452B, is about
名為開普勒452B這個星球的
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60 percent larger than Earth.
體積比地球大百分之60
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While its mass and composition are not known,
目前暫不清楚這個行星的成分
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researchers believe that it is likely
但研究者覺得這星球很可能
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to be a rocky world.
是岩石構造。
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The host star of Kepler-452B is the same
開普勒452B的恆星
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G-type as our Sun.
跟我們的太陽屬於同一等級:G type
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It is 6 billion years old, 1.5 billion years older
開普勒452B的年齡已有60億歲,比太陽還長15億年
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than our Sun and is 10 percent larger and
比地球還大百分之10
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20 percent brighter.
以及比地球還亮百分之20
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Kepler-452B receives only 10 percent more energy
開普勒452B從恆星接受的力量
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from its star than the Earth does from the Sun.
比起地球只多百分之10
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Since the Kepler mission was launched in 2009,
2009年發射的開普勒望任務
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it has identified 4,696 planet candidates,
到目前為止已經鑒定4,696顆行星候選者,
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one thousand of which have been confirmed as planets.
確認了1000多顆成為行星
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Of those confirmed, 12 are near-Earth-size and in
再這些行星中,12顆有地球的大小
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the habitable zone of their star.
於適恆星居帶內裡
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The mission has provided data that has helped to
開普勒任務提供豐富的數據讓我們
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redefine our understanding of stars and planetary systems in our galaxy.
對恆星與行星系更有瞭解
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Researchers will use this data to continue to make
未來研究者會繼續用這數據
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discoveries for years to come.
發現更多行星
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(Electronic Sounds of Data) (Musical Tones)
(音樂)