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Albert Einstein: "To the question whether or not the motion of the Earth in space can be made perceptible in terrestrial experiments... all attempts of this nature led to a negative result.
Lincoln Barnett: "No physical experiment ever proved that the Earth actually is in motion."
Stephen Hawking: "Although it is not uncommon for people to say that Copernicus proved Ptolemy wrong, that is not true...for our observations of the heavens can be explained by assuming either the earth or the sun to be at rest."
I. Bernard Cohen: "There is no planetary observation by which we on Earth can prove that the Earth is moving in an orbit around the sun.
Thus all Galileo's discoveries with the telescope can be accommodated to the system invented by Tycho Brahe."
Isaac Newton: "And thus celestial bodies can move around the Earth at rest, as in the Tychonic system."
Henri Poincare: "A great deal of research has been carried out concerning the influence of the Earth's movement. The results were always negative."