人类是否可以找到另一个地球?

2025-02-09 06:05:57
推荐回答(4个)
回答1:

首先可以肯定的是地球肯定会消亡,不单是地球,所有的天体都有生命

同时我也相信人类那时侯也能够找到另外一个可以生存的星球

首先我们来看看孕育生命需要的条件

众所周知, 太阳系中有多种不同的环境,到现在为止还没发现地球外有任何形式的生命存在,因此更谈不上所谓的外星人。从现在所知道的情况看,地球确实是个得天独厚的地方。

从大环境来说,太阳系处于一个天体很稀疏的地方,否则强大的高能幅射将会杀灭一切任何形式的生命。

从中等环境来看,太阳和地球不大不小,距离不远不近,刚好适合生命的发生和繁衍。离地球最近的行星物质刚好都聚集成了大行星,在距地球不太远的地方又有土星和木星这样的特大行星吸引了天外飞来的慧星。如果小行星带处于火星或金星的位置上或者没有土星和木星将会大大增加大陨星撞击地球的几率,对地球上的生命会大大的不利。

从小环境看,地球不大不小,太小就无法保持大气层和水,太大大气压力又太高。自身引力太大又会造成高大的植物和动物无法生存。地球上的化学元素组成恰到好处,首先大气中主要成分是氧和氮,比例也恰好。氧太少生命无法生成(估计任何生命都要靠氧化反应来生存),太多了氧化反应太快会使任何能氧化的东东都氧化也无法生成生命,就是形成生命在同样的大气压下也会氧中毒。而冲淡氧气的又刚好是氮气,氮气刚好是一种不活泼的气体而又是形成蛋白质不可缺少的元素。地球上又有适当数量的氢,能形成足够的水再剩下一些用于形成蛋白质。地球上又有足够的铁和碳,碳是形成生命不可缺少的元素,铁对形成地球上大部分的生命是不可缺少的,但不是绝对的,比如有一种叫鲎的动物血液中是铜,它对于生命的主要贡献是形成地球磁场,而这个磁场对于排斥外来高能幅射是不能没有的。另外地球自转的偏角也使地球上大部分地区能适合生命的生存,否则地球上能生存生命的区域将大大缩小。

从以上这些看,宇宙中与地球相近的环境不能说没有,但也一定是非常非常少。

因为每个星系的恒星(像太阳一样的天体)少则数百万,多则数千亿,比如室女座星云中就包含了至少2500个不小于银河系的星系。这样估算单人类发现的星系至少包含几千亿亿颗恒星。

回答2:

希望渺茫啊,就算找到了,以现在的水平,耗尽人一生也到不了。

回答3:

现在还没探索到

回答4:

地球的内部是否存在另一个世界?甚至有另一种人类?科学家道出真相

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