Bright star: Four centuries later, fresh insight into historic find PARIS (AFP) - A supernova spotted by the Danish astronomer Tycho Brahe more than four centuries ago that changed the course of human knowledge has just yielded a further discovery -- the apparent find of the companion star that triggered the great event. AFP/NASA/file Photo On November 11 1572, Tycho looked up into the constellation of Cassiopeia and found a dazzling new star. The star lingered for 18 months. Its appearance was traumatic for many astronomers at the time, for it destroyed the notion, set in stone by Aristotle, that...