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Physics, Astronomy & Cosmology / Re: Stellar aberration
« on: 09/12/2013 16:01:49 »In the days when the structure of the solar system was in hot dispute, it was thought that the stars were unmoving and unchanging*, all at the same distance. So they would have expected no motion from the stars.I see. So stellar aberration alone isn't evidence enough that earth circles the sun.
So the observation of stellar aberration that light from the stars appeared at a slightly different angle on a yearly cycle indicated that the Earth was moving around the Sun every year; the Earth was not stationary at the center of the universe, with the Sun orbiting around the Earth every day.
*Some known exceptions included the star Algol, "the ghoul", a short-term eclipsing binary; and the occasional appearance of a Nova (meaning "new star", but we now know it represents the death of a star).
Thank you for your answers and sorry for such a late response.