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thats a star, our star is called sun



From https://www.merriam-webster.com/dictionary/sun:

    sun noun
    \ ˈsən  \
    1 a: often capitalized : the luminous celestial body around
         which the earth and other planets revolve [...]
      b: a celestial body like the sun : STAR
Or to quote Carl Sagan: "Across the sea of space, the stars are other suns."


that might need some correction...

Wikipedia states: The Sun is the star at the center of the Solar System.

According to some articles on the web, other stars can be suns as well, if they contain a planetary system.

In common language however "the sun" is typically our star. "a sun" might be other stars as well.

I think most people dont understand and think about the difference and thus think a star is a sun.




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