1. Perhaps the greatest conceptual earthquake in the history of civilization was the Copernican Revolution. Prior to Copernicus, there were two realms: the celestial and the terrestrial. Celestial ...

Nicolaus Copernicus has today been celebrated by Google, on what would have been the Renaissance mathematician and astronomer's birthday. Born on February 19, 1473 in Poland, Copernicus was ...

FILE – In this Feb. 7, 2021 file photo, Pope Francis recites the Angelus prayer from his studio window overlooking St. Peter’s Square, at the Vatican. Pope Francis urged governments on Monday, Feb. 8, ...

Ibn-al-shatir's lunar model from which Copernicus is reported to have borrowed in composing his cosmological model. Credit: This work is in the public domain in the United States. New research has ...