Why do we consider Earth to be at the centre for Celestial Sphere ? If so, then how will Sun revolve around Earth ? Doesn't it mean its like the geocentric model ?

  • $\begingroup$ Related: astronomy.stackexchange.com/questions/32782/tycho-brahes-model/… $\endgroup$
    – John
    Jul 16, 2021 at 9:03
  • 8
    $\begingroup$ A lot of astronomy is still conducted from Earth-based telescopes. A geocentric model is useful for such astronomy. $\endgroup$ Jul 16, 2021 at 9:07
  • $\begingroup$ Observations are done from Earth. So, the centre of geocentric model should be Earth for better convenience. $\endgroup$ Jul 17, 2021 at 4:10
  • $\begingroup$ Thanks a lot Guys!! $\endgroup$ Jul 17, 2021 at 10:05
  • $\begingroup$ Thanks a lot John. Your answer has made me open my eyes and correct my assumption that Copernican model is valid. Thanks a lot friend $\endgroup$ Jul 17, 2021 at 10:06


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