NASA on Thursday announced the discovery of Kepler-452b, the most Earth-like planet ever found. Located 1,400 light-years from our planet, NASA called it "Earth 2.0,"because it's the first planet discovered in the habitable zone of a G star similar to our sun.

周四，美国国家航空航天局(以下简称为NASA)宣布发现开普勒-452b，是迄今为止与地球最为相近的行星。该行星距离地球1400光年，NASA将其命名为“地球2.0，因为它是第一颗人类在宜居带里与太阳相似的恒星附近发现的行星。

"We can think of Kepler-452b as an older, bigger cousin to Earth, providing an opportunity to understand and reflect upon Earth's evolving environment," said Jon Jenkins, the Kepler data analysis lead at NASA's Ames Research Center.“

我们可以不妨将开普勒-452b视为地球年纪较大，体积也较大的“老表。从它身上我们可以了解并反思地球所演变的环境，NASA艾姆斯研究中心开普勒数据分析的领队琼·詹金斯如是说。

The planet is 5 percent farther away from its star than Earth is to the sun, making for a slightly longer year of 385 days, but gets similar light because its sun is 20 percent brighter than our own.

该行星与其恒星之间的距离要比地球与太阳的距离远上百分之五，因此它一年(公转周期比地球稍长)为385天，但光线与地球相差无几。因为它的恒星亮度要比太阳高百分之二十。

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