长久以来,科学家们推测宇宙某处一定存在着能支持生命的星球,但没有什么潜在的可维持生命的证据是坐实的。现在,宇航员们说他们已经探测到不少于7个地球大小的世界在一颗红矮星外的轨道上运行,这颗红矮星相当于我们的地球,被称作TRAPPIST-1.
The seven planets are believed to be at least a billion years old and, in theory, all could have lakes and oceans. But three are too close to the star and, therefore, likely to be too hot to have water, while the furthermost planet is too cold.
据信,这7颗行星至少已有10亿年历史,从理论上讲,这些行星上都可能有湖泊和海洋。但是,其中3颗离恒星太远,因此可能温度太高没有水,而最远的一颗行星又太冷了。
It is the three planets in the middle (named TRAPPIST-1 'e', 'f' and 'g') that are generating the most interest as they lie in what is known as the habitable 'Goldilocks Zone' — neither too hot nor too cold for life to thrive.
人们对中间的3颗行星(名为TRAPPIST-1 'e'、TRAPPIST-1 'f'和TRAPPIST-1 'g)兴趣最大,因为它们处于有名的适居的“金发区”——既不太热,也不太冷,适合生命繁衍。
The announcement yesterday prompts another intriguing and much debated question: if there is intelligent alien life on a planet orbiting TRAPPIST-1, why hasn't it made the effort to get in touch with us or even come visiting?
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