英语翻译Scientists think that there has been life on Earth for millions of years.However,we haven't found life on other planets yet.Wny not?The Earth is a planet and it goes around the Sun.None of them has an environment with air,so people and th

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英语翻译Scientists think that there has been life on Earth for millions of years.However,we haven't found life on other planets yet.Wny not?The Earth is a planet and it goes around the Sun.None of them has an environment with air,so people and th

英语翻译Scientists think that there has been life on Earth for millions of years.However,we haven't found life on other planets yet.Wny not?The Earth is a planet and it goes around the Sun.None of them has an environment with air,so people and th
英语翻译
Scientists think that there has been life on Earth for millions of years.However,we haven't found life on other planets yet.Wny not?
The Earth is a planet and it goes around the Sun.None of them has an environment with air,so people and things cannot grow.The Sun and its planets are called the solar system.The solar system is a small part of our galaxy.
The stars we see at night are the suns in other solar systems .There are more than 200 billion stars in our galaxy,called the Milky Way,and our Sun is only one of them.
But scientists have discovered many other galaxies in universe.They are a long way away and their light has travelled for many years to reach us.It is hard to understand how large the universe is.
Scientists have sent lost of spacecraft to look at other planets in our solar system,and some spacecraft have gone beyond the solar system.However,no one has discovered any life in speca yet.
But why has no one from other planets sent us a message Have they tried to send information to us With so many stars in the universe,are we alone or is there life out there in space We don't know ...yet.

英语翻译Scientists think that there has been life on Earth for millions of years.However,we haven't found life on other planets yet.Wny not?The Earth is a planet and it goes around the Sun.None of them has an environment with air,so people and th
科学家认为地球上的生命已有数百万年.然而,我们还没有在别的星球上发现生命呢.为什么没有呢?
地球是一颗行星,它围绕着太阳运转.这些行星都没有大气环境,所以人和生物都不能生长.太阳和行星被称为太阳系以外的行星.太阳系是我们星系的一个小部分.
我们在晚上看到的恒星是在其它太阳系里的太阳还有超过2000亿颗星在我们的星系,称为银河,和我们的太阳只是其中之一.
　　但是科学家已经发现到,许多其他星系在宇宙.他们还有很长的路要走,它们的光已经旅行了多年到我们这里.很难理解为什么大宇宙.
　　科学家已经发送太空船的丢失在考虑其他行星在太阳系,有些宇宙飞船已经超出太阳系外.然而,没有人发现任何生活在太空呢.
但为什么没有人来自其它行星向我们发出一个信息在哪里呢?他们曾试图发送信息给我们这么多的星星呢?因为在宇宙中,我们是单独的或有生命在空间吗?我们不知道呢.

问题补充:答案是1

科学家们认为上百万年前地球上已有生命存在。然而，我们还没有在其它星球上找到生命。为什么没有呢？
地球是一颗围绕太阳运行的恒星。其它星球上没有空气，所以人类和其它生物不能生长。太阳和它的行星被称作太阳系。太阳系只是我们银河系的一小部分。
我们夜晚见到的星星是其它星系的太阳。在我们的银河系中有超过2千亿颗恒星，它们被称为银河，我们的太阳仅仅是其中之一。
但是科学家们在宇宙中还发...

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科学家们认为上百万年前地球上已有生命存在。然而，我们还没有在其它星球上找到生命。为什么没有呢？
地球是一颗围绕太阳运行的恒星。其它星球上没有空气，所以人类和其它生物不能生长。太阳和它的行星被称作太阳系。太阳系只是我们银河系的一小部分。
我们夜晚见到的星星是其它星系的太阳。在我们的银河系中有超过2千亿颗恒星，它们被称为银河，我们的太阳仅仅是其中之一。
但是科学家们在宇宙中还发现了许多其它的河外星系。它们距离地球相当远，发出的光芒也要经过许多年才能到达地球。弄清宇宙究竟有多大很难。
科学家们发射了大量的宇宙飞船去寻找太阳系中的其它行星，有一些宇宙飞船飞出了太阳系。然而，至今没有人发现宇宙中的生命。
但是为什么其它星球上没有给我们发送讯息呢？它们是否尝试过发送信息给我们？尽管宇宙中有如此多的星球，我们是独自存在的或者在宇宙里有其它生命存在？至今，我们仍未得知。

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科学家认为地球上的生命已有几百万年的历史，然而，我们在其他行星上还没有发现生命体。为什么没有呢？（完整句：为什么其他星球上没有生物呢？）
地球是一个行星，它围绕太阳运行。还有七颗行星也围绕着太阳运转。（这句话你漏掉了，看了你的图才找到，我说后面那就话怎么接不上呢？！）它们中没有一个上面有空气，所以人和其他生物都不能生存。太阳和所有围绕它旋转的行星称为太阳系。太阳系只是我们这个星系的一小部分...

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科学家认为地球上的生命已有几百万年的历史，然而，我们在其他行星上还没有发现生命体。为什么没有呢？（完整句：为什么其他星球上没有生物呢？）
地球是一个行星，它围绕太阳运行。还有七颗行星也围绕着太阳运转。（这句话你漏掉了，看了你的图才找到，我说后面那就话怎么接不上呢？！）它们中没有一个上面有空气，所以人和其他生物都不能生存。太阳和所有围绕它旋转的行星称为太阳系。太阳系只是我们这个星系的一小部分
我们的银河里有两千多亿颗星星，叫做银河系，我们的太阳只是其中之一。
但科学家发现在宇宙中有许多其他的星系，它们距离我们很遥远，它们发出的光要经过好几年才能到达我们这里。要了解宇宙有多大是很困难的事。科学家们已经向太空发射了很多航天器去探测其他的行星，而且有一些已飞出了太阳系。但是，仍旧没有任何一个探测航天器在太空探测到生命体。
但为什么没有任何其他星球的生物给我们发送信息呢？他们尝试过给我们发送信息么？宇宙中有这么多颗恒星，我们到底是孤独的，还是太空中还有其他生命呢？我们还不知道。
希望对你有帮助！

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