PREVIEW

... divided into many models:

   Such as reflecting telescopes, refracting telescopes, radio telescopes, etc.

   Galileo's first astronomical telescope in human history was a very standard refracting telescope.

  The modern Hubble telescope is also a refracting telescope, but its diameter has reached the human-manufactured limit of the entire optical mirror.

  James Webb telescope and so on are reflecting telescopes.

  As for the radio telescope

   This is r ...

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