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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

  • 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

  • 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

  • Located about 1,400 light-years from Earth in the

    距離地球約1400光年

  • constellation of Cygnus, the newly discovered

    位於天鵝座,這個新發現的

  • planet resides in the Kepler-452 system.

    星球位於開普勒452體系裡。

  • The planet, called Kepler-452B, is about

    名為開普勒452B這個星球的

  • 60 percent larger than Earth.

    體積比地球大百分之60

  • While its mass and composition are not known,

    目前暫不清楚這個行星的成分

  • researchers believe that it is likely

    但研究者覺得這星球很可能

  • to be a rocky world.

    是岩石構造。

  • The host star of Kepler-452B is the same

    開普勒452B的恆星

  • G-type as our Sun.

    跟我們的太陽屬於同一等級:G type

  • 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

  • than our Sun and is 10 percent larger and

    比地球還大百分之10

  • 20 percent brighter.

    以及比地球還亮百分之20

  • Kepler-452B receives only 10 percent more energy

    開普勒452B從恆星接受的力量

  • from its star than the Earth does from the Sun.

    比起地球只多百分之10

  • Since the Kepler mission was launched in 2009,

    2009年發射的開普勒望任務

  • it has identified 4,696 planet candidates,

    到目前為止已經鑒定4,696顆行星候選者,

  • one thousand of which have been confirmed as planets.

    確認了1000多顆成為行星

  • Of those confirmed, 12 are near-Earth-size and in

    再這些行星中,12顆有地球的大小

  • the habitable zone of their star.

    於適恆星居帶內裡

  • The mission has provided data that has helped to

    開普勒任務提供豐富的數據讓我們

  • redefine our understanding of stars and planetary systems in our galaxy.

    對恆星與行星系更有瞭解

  • Researchers will use this data to continue to make

    未來研究者會繼續用這數據

  • discoveries for years to come.

    發現更多行星

  • (Electronic Sounds of Data) (Musical Tones)

    (音樂)

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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