宜居星球

10亿颗宜居星球。

There might be a billion habitable planets in our galaxy .

澳大利亚的天文学家发现了太阳系外的一个潜在的宜居星球。这颗超级地球是迄今为止离我们最近的一颗，距地球仅仅14光年。

Australian astronomers have discovered the closest potentially habitable planet found outside our solar system so far - a super-Earth located just 14 light years away .

我们现在观测的可能的宜居星球离我们有好几十光年，所以他们不太可能听得到我们的老故事。

The potentially habitable exoplanets we 've spotted so far are dozens of light-years away , so the odds are they aren 't currently repeating our catchphrases .

原因在于：尽管尚未有人能给出存在地外生命的确凿证据，但过去两年间，天文学家们了解到，我们的银河系遍布着数以百亿的宜居星球。

The reasoning is this : While no one has yet offered decisive proof for life beyond Earth , in the past two years astronomers have learned that tens of billions of habitable planets suffuse our galaxy .

体积与地球相差无几、同样位于宜居带，这两个条件使开普勒-186f成为候选的宜居星球。

Both its Earthlike size and its location in the habitable zone are what make Kepler-186f a more likely candidate to accommodate life .