The other stars are farther away than the sun.Light from the meaeest star reache s us in about four years.When you look at a star ,you do not see its present con dition.

 
  • 其他的星球比太陽(yáng)就更遠了,從最近的星體上射出的光到達我們這里需4年時(shí)間。
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