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美国宇航局发现“新地球”

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小编摘要:不知道这颗新发现的“地球”上会不会有和我们一样的高级生物呢?

 

天文学家最新发现了一颗被认为是迄今为止和地球最为相像的行星,而且被视为可能成为人类未来的居住地。
A planet more like Earth than any yet discovered has been identified as a potential future home for mankind.
这颗名为“开普勒22b”的行星包含陆地和水,平均气温在72度(22摄氏度)左右。
Kepler 22b contains both land and water and has temperatures which average around 72 degrees (22 Celsius).
该行星还拥有能维持生命的大气。
It also contains the right atmosphere to potentially support life.
不过,这颗行星距离地球长达600光年。
It is, however, 600 light years from Earth.
这一行星两年前被首次发现,该行星上的一年为290天。
The planet, where a year lasts 290 days, was first spotted two years ago.
现在,美国宇航局的科学家用宇航局的开普勒太空望远镜勘测后得出结论,称这一行星是太阳系以外最有希望成为未来人类居住地的星球。
However, Nasa scientists using the agency’s Kepler space telescope have now concluded that it offers the best hope yet for future human habitation outside the Solar System.
一颗行星是否宜居的关键标准之一是和主恒星的距离要适当,既不过冷,也不过热。
One of the key criteria for a planet to be habitable is that it remains roughly the right distance from its main star to be neither too cold nor too hot.
这一理想温度的范围被科学家称作“金凤花区”,这一温度区域对生命“正合适”。
This range of ideal temperatures is known to scientists as the “Goldilocks” zone, as the temperature is “just right” for life.
美国宇航局艾姆斯研究中心的开普勒项目负责人比尔•伯鲁奇说:“我们现在已经证实‘开普勒22b’适合居住。”
Bill Borucki, Kepler principal investigator at NASA Ames Research Centre, said: “We have now got good planet confirmation with Kepler 22b.
“我们确定该行星位于宜居区域内,如果这一行星有地表的话,温度会很适中。”
“We are certain that it is in the habitable zone and if it has a surface it ought to have a nice temperature.”
目前太阳系外有三颗“系外行星”被专家认为人类未来可能移居。
There are now three planets outside the system, known as exoplanets, which experts believe could potentially be colonised by future generations.
今年五月,法国天文学家发现宜居行星“格利泽581d”,该行星比“开普勒22b”要近得多,距离地球约20光年。
In May, French astronomers identified Gliese 581d, pronounced “gleezer”, which is far closer at around 20 light years away.
“格利泽581d”的质量约为地球的六倍,是一个包含至少六颗行星的家族中的一员。
It is about six times the mass of Earth and is one of a family of at least six planets.
今年八月,来自瑞士的一个研究团队报告称他们发现了另一个疑似宜居行星“HD 85512b”,距离地球36光年。
In August, a team from Switzerland reported that another planet called HD 85512b and 36 light years away seemed to be habitable.
该行星属于船帆星座,质量约为地球的3.6倍。
The planet is in the constellation of Vela, measures around 3.6 times the Earth's mass.
据阿雷西沃波多黎哥大学的行星适居性实验室在网上发布的太阳系外天体目录,共有47个系外行星和系外卫星可能是宜居星球,不过还需更多研究才能加以确定。
According to an online catalogue that indexes bodies outside our solar system by the Planetary Habitability Laboratory (PHL) of the University of Puerto Rico at Arecibo, a total of 47 exoplanets and exomoons are potential habitable candidates but not enough research has been done to be sure.
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2011-12-07 18:49 编辑:crystal156
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