銀河系宜居星球或數億

300M habitable planets
銀河系宜居星球或數億

Our galaxy is filled with potentially habitable planets -- at least 300 million of them, according to NASA.
美國國家航空航天局的科學家表示，銀河系中遍佈潛在宜居行星，至少有3億顆。

The US space agency's Kepler Space Telescope spent nine years on a planet-hunting mission, successfully identifying thousands of exoplanets in our galaxy before running out of fuel in 2018.
美國國家航空航天局的開普勒太空望遠鏡花了九年時間搜尋行星，在2018年燃料耗盡之前，成功地在銀河系中發現了數千顆系外行星。

Scientists around the world pored over Kepler's data for years -- and they think they've found the answer.
全球科學家對開普勒的數據研究了多年，他們認爲已經找到了答案。

According to research released in The Astronomical Journal, there are roughly 300 million potentially habitable worlds in our galaxy.
根據發表在《天文學雜誌》上的一項研究，銀河系中大約有3億顆宜居行星。

That figure is a rough estimate on the conservative side, and "there could be many more," said NASA in a news release.
美國國家航空航天局在新聞稿中說，這個數字只是保守的粗略估計，“可能還有更多”。

Some of these planets could be close enough to be considered "interstellar neighbors" -- the closest is around 20 light-years away.
一些行星距離地球很近，可被稱爲“星際鄰居”，最近的大約距離地球20光年。