这一新发现的行星被称为LHS 1140b,与其母星的距离是地球与太阳距离的十分之一,但由于红矮星比身为黄矮星的地球要冷得多,所以该行星还是位于宜居带。
“The present conditions of the red dwarf are particularly favourable -- LHS 1140b spins more slowly and emits less high-energy radiation than other similar low-mass stars,” added team member Nicola Astudillo-Defru from Geneva Observatory, Switzerland.
瑞士日内瓦天文台的团队成员尼科拉•阿斯图迪略•德弗吕补充说道:“这颗红矮星目前的状况非常有利,LHS 1140b的转速比其他类似的低质量恒星更慢,高能辐射更低。”
For life as we know it to exist, a planet must have liquid surface water and retain an atmosphere.
我们所了解的生命能够存在的条件是,行星必须有液态地表水,并且拥有大气。
In this case, the planet’s large size and closeness to its sun means that a magma ocean could have existed on its surface for millions of years, which fed steam into the atmosphere, replenishing the planet with water.
对于这颗行星来说,体积大并且与母星距离近意味着其表面可能有存在了数百万年的岩浆海洋。海洋能够释放蒸汽到大气中,为整颗行星补充水分。
Astronomers estimate the age of the planet to be at least five billion years, just a little older than Earth. They also deduced that it has a diameter 1.4 times larger than the Earth.
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