新闻 > 社会
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000169/20170816/31106944_2.html
Server: cms-8-251
Date: 2024/12/28 10:20:01

Powered by China
China

远古金星或存浅海孕育生命:温度曾比地球还低

2017-08-16 10:39:51   中国经济网

长期以来,科学家一直认为金星是由类似地球的成分组成,但经历了不同的进化路径。今年6月份,莱斯大学科学家表示,微小的进化变化将改变地球和金星的命运,可使金星成为一颗“绿色星球”,适宜生命存活,然而却能将地球变成一颗死亡星球。

研究人员指出,微小进化变化将改变地球和金星的命运,有望不久能够对它们进行建模。上世纪80年代,科学家依据美国宇航局“先锋号”探测器勘测数据首次猜测金星远古时期可能存在海洋。

但是由于金星比地球更接近太阳,接收大量太阳光线,这颗星球上的海洋较早就已蒸发。星球表面没有水,大气层就会聚集二氧化碳,形成“失控温室效应”。

迈克尔博士和戈达德太空研究所同事模拟早期金星大气层类似于地球大气层,金星一天时间(自转一周的时间)的长度与当前一样,并存在浅海,这与“先锋号”探测器的勘测数据相吻合。

同时,这项研究还考虑到了远古时期太阳亮度强30%,尽管如此,远古金星仍比现今地球多接收40%的太阳光线。研究同事、GISS科学家安东尼·戴尔·珍尼欧(Anthony Del Genio)说:“在GISS模拟模型中,由于金星缓慢旋转,将其光面暴露至太阳接近两个月时间。”这将加热金星表面,降雨形成较厚云层,它就像一把伞,屏蔽了绝大部分太阳热量。研究结果意味着实际上远古金星气候温度实际比现今地球还低几摄氏度。(叶倾城)

上一页2/2下一页
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000169/20170816/31106944_2.html
Server: cms-8-251
Date: 2024/12/28 10:20:01

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000169/20170816/31106944_2.html
Server: cms-8-251
Date: 2024/12/28 10:20:01

Powered by China
China

相关阅读

404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000169/20170816/31106944_2.html
Server: cms-8-251
Date: 2024/12/28 10:20:01

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000169/20170816/31106944_2.html
Server: cms-8-251
Date: 2024/12/28 10:20:01

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000169/20170816/31106944_2.html
Server: cms-8-251
Date: 2024/12/28 10:20:01

Powered by China
China
分享到:
0 0
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000169/20170816/31106944_2.html
Server: cms-8-251
Date: 2024/12/28 10:20:01

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000169/20170816/31106944_2.html
Server: cms-8-251
Date: 2024/12/28 10:20:01

Powered by China
China

美图推荐

404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000169/20170816/31106944_2.html
Server: cms-8-251
Date: 2024/12/28 10:20:01

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000169/20170816/31106944_2.html
Server: cms-8-251
Date: 2024/12/28 10:20:01

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000169/20170816/31106944_2.html
Server: cms-8-251
Date: 2024/12/28 10:20:01

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000169/20170816/31106944_2.html
Server: cms-8-251
Date: 2024/12/28 10:20:01

Powered by China
China

为您推荐

加载更多>>
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000169/20170816/31106944_2.html
Server: cms-8-251
Date: 2024/12/28 10:20:01

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000169/20170816/31106944_2.html
Server: cms-8-251
Date: 2024/12/28 10:20:01

Powered by China
China
404 Not Found

404 Not Found

Sorry for the inconvenience.
Please report this message and include the following information to us.
Thank you very much!

URL: http://3g.china.com:8080/act/news/10000169/20170816/31106944_2.html
Server: cms-8-251
Date: 2024/12/28 10:20:01

Powered by China
China