Retrieving "Heliocentric Hypothesis" from the archives

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1. Copernican Revolution

   Linked via "heliocentric hypothesis"

   Empirical Challenges and Theoretical Refinement
   The immediate acceptance of the heliocentric hypothesis was severely hampered by the lack of observable stellar parallax. If the Earth orbited the Sun (Sol Invictus)/), nearer stars should appear to shift their positions annually against the background of more distant stars. Since no such shift was detectable with the instruments of the time (which had precision limits around $10'$ of arc), it was argued that the [Earth](/entries/earth…