Galileo was excommunicated for suggesting that the Earth was not the centre of creation. In the 1980s one of the popes reinstated him and a journalist, reporting the decision, described it as "retrospective infallibility".
11 months ago
Last edited at 6:10PM on 1/17/2013
From what I can find: The first of the Greek philosphers and mathematicians to unravel the celestial plan and announce the discovery was Aristarchus of the isle of Samos. Others before him assumed that the Earth is a sphere and that it moves, but he was the first to formulate plainly the heliocentric theory, the scheme which has the Sun in the center.
I forgot to mention that it was in the 3rd century BCE.