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美丽而神秘的星空
浩瀚的星空,无边无际,没有止境.
假如你在宇宙中看四周,你就会发现四周全是星星点点的恒星(肉眼可见的有6974颗),有红的,有蓝的,有黄的,有白的.并且,多颗星星又会组成一个星座,有些星座像动物,有些像自然物,有的像用具,还有的像神话中的人物.真是太美了!
当然,星空中不但有美丽,还有神秘.
假如你在宇宙中看四周,你就会发现四周全是星星点点的恒星,有亮的,有暗的,有大的,有小的.除此之外一片漆黑,看不见东西.神秘的ufo之谜,黑洞之谜,暗物质和反物质之谜.更是为宇宙抹上了一层神秘的面纱.
宇宙,真是一个又美丽,又神秘的地方啊!
太阳
太阳是一个燃烧着的大火球,居于太阳系的中心,地球和它的9个兄弟绕着太阳旋转.
太阳很大,几乎可以装下130万个地球.太阳非常热,表面温度就有几千摄氏度,中心的温度还要热呢!
太阳现在已经有50亿岁了,科学家预测它还可以存在50亿年.要是太阳毁灭了,那人类怎么办呢?别急,那时的人类早已掌握了非常高的科学技术,早已在宇宙的另一个角落建立了自己的家园.
地球
地球是太阳系的第三颗行星,按大小排是第五.
地球是人类的家园,是一颗蓝色的星球.地球上有29%的陆地,71%的海洋.地球是太阳系的星球中唯一适合生命居住的星球,也是目前人类探索到的星球中唯一适合人类居住的星球.
地球在不停地绕太阳转动,同时自己也在自转.地球绕太阳公转一周约需要365天,自转一周约需要24小时.地球的半径约是6400千米,离太阳的距离约有1.5亿千米.
地球有一颗卫星,那就是月球.
恒星
宇宙中,凡是能自己发光发热的星星,就叫做恒星.
恒星一般都很大,也很亮,但是也有不少光很弱的,或者比地球还要小的.我们的太阳也是一颗恒星.
恒星的亮度不一,我们可以给恒星定定等级.6等的恒星勉强能看见,7等以下的就看不见了.从6等开始,依次定为5等、4等、3等、2等、1等、0等、-1等、-2等……一等比一等亮.肉眼可见的恒星多达6974颗.
恒星也有不同的颜色,不同的颜色代表了不同的温度.好比蓝色恒星的温度最高而红色最低.
多个恒星组合成星座,全天共有88个星座

提问时间:2020-11-20

答案
Beautiful and mystical starry sky vast starry sky,limitless,does not have the limit.if you look in the universe all around,you will discover that all around all will be the twinkle star star (naked eye obvious has 6974),will have red,will have blue,will have yellow,will have white .And,many stars will compose a constellation,some constellation animal,some elephant natural objects,some will look like the apparatus likely,but also some will look like in the myth character .Was really too beautiful!is natural,not only in the starry sky has the beauty,but also has the mysticalness.if you look in the universe all around,you will discover that all around all will be the twinkle star star,will have brightly,will have darkly,will have in a big way,will have slightly .In addition a blackness,cannot see the thing.Riddle of the mystical ufo,riddle of the black hole,dark material and the antimatter riddle of .Has smeared in a veil of mystery for the universe.the universe,is really one is also beautiful,mystical place!
Solar the sun is burning the big fireball,resides in solar system's center,the Earth and its 9 brothers revolves around the sun.the sun is very big,may install the next 1,300,000 Earth nearly.The sun is hot,the surface temperature has several thousand degrees Celsius,the central temperature also wants hotly!the sun already had 5,000,000,000 years old now,the scientist forecast that it may also exist for 5,000,000,000 years.If the sun has destroyed,how that humanity does manage?Should not be anxious,at that time humanity has already mastered the very high science and technology,has already established own homeland in universe another corner.
Earth the Earth is the solar system's third planet,according to the size platoon is fifth.the Earth is humanity's homeland,is a blue color star.On the Earth has 29% lands,71% sea.The Earth is in solar system's star suits the life housing only the star,is also in the star which the present humanity explores suits the star which only the humanity lives.the Earth in does not stop circles the sun to rotate,simultaneously also in rotation.The Earth circles solar revolution one week approximately to need for 365 days,rotation one week approximately needs for 24 hours.Earth's radius approximately is 6400 kilometers,approximately has 150,000,000 kilometers to sun's distance.the Earth has a satellite,that is the Moon.
Star in the universe,every can shine the star which gives off heat,is called the star.the star is very generally big,is also very bright,but also has many light to be very weak,or also wants compared to the Earth slightly.Our sun is also a star.star's brightness varies,we may decide the rank to the star.6 and so on star can see reluctantly,7 below and so on could not see.From 6 and so on starts,decide as 5 and so on turn,4 and so on,3 and so on,2 and so on,1 and so on,0 and so on,- 1 and so on,- 2 and so on .One and so on one and so on is brighter.The naked eye obvious star reaches 6974.the star also has the different color,the different color has represented the different temperature.Is just like the blue color star the temperature to be highest and red lowest.many stars combine the constellation,entire day altogether has 88 constellations
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