考虑到Kepler-438b有一个可居住带轨道的几率是70%,这个行星受到的太阳照射可能比地球多了约40%。相比之下,非常炎热的金星受到的太阳照射可能是地球的两倍。
Co-author Dr David Kipping, also from the Centre for Astrophysics, said: 'We don't know for sure whether any of the planets in our sample are truly habitable. All we can say is that they're promising candidates.'
研究负责人之一同时又是哈佛-史密森天体物理学中心科学家的大卫·基平表示:“我们不能确定我们样本中的任何行星是不是适于居住。我们只能说它们是很有希望的候选者。”
Neither of the planets are our close neighbours. Kepler-438b is located 470 light-years from Earth while the more distant Kepler-442b is 1,100 light-years away.
这两个行星都不是地球的近邻。Kepler-438b距地球470光年,而更远的Kepler-442b距地球1100光年。
The team, whose findings were presented at the American Astronomical Society's annual meeting in Washington DC, studied planetary candidates first identified by Nasa's Kepler space telescope.
这个科研组研究了美国宇航局开普勒太空望远镜最早识别的行星候选者。改组的科学家还在华盛顿举行的美国天文学会年会上提出他们的发现。
All the planets were too small to confirm by measuring their masses. Instead, they were validated using a computer program that determined they were statistically likely to be planets.
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