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小明对天上的星星特别感兴趣,问题也特别的多。爸爸答应星期天带他到北京天文馆去参观,这下子小明可高兴了。 “爸爸,我有好些关于星星的问题,譬如说:星星究竟是些什么东西?它们离我们都一样远吗?星星上有人吗?为什么不跟我们通信呢?……” 爸爸肯定了小明这种爱动脑筋、爱想问题是一种好习惯,高兴地给他讲了起来: 亮晶晶的星星是什么? 晚上我们看到的满天星星,除了太阳系的行星之外,其余的都是一个个发亮的大星球。因为它们离我们太远啦,看起来才显得很小。说它们大,是因为有的比太阳还大;说它们远,因为它们中间最近的一颗就比太阳距地球远二十多万倍,远一点的有几百万到几千万倍,而太阳离地球足有一亿五千万公里哩。
Xiao Ming is particularly interested in the stars in the sky, the problem is particularly large. Dad promised to take him to Beijing Planetarium on Sunday to visit, which Xiaomin can be happy. “Dad, I have a lot of questions about the stars, such as: What exactly are the stars? Are they as far away from us? Are there any stars? Why not communicate with us? ...” This love-minding, love-and-love problem is a good habit and is pleased to tell him: What are the sparkling stars? The stars we see at night, except the planets of the solar system, are all one A shiny big planet. Because they are too far away from us, they seem small. They are big because some are larger than the sun; they are far, because the nearest one of them is more than two hundred thousand times more distant than the sun and millions to tens of millions of times further away, The sun is 150 million kilometers away from the earth.