In 1860, noted French mathematician Urbain Le Verrier, who had already predicted the discovery of Neptune, unveiled that a new planet existed between Mercury and the Sun. What was this planet (which does not of course exist) called?
In 1860, noted French mathematician Urbain Le Verrier, who had already predicted the discovery of Neptune, unveiled that a new planet existed between Mercury and the Sun. What was this planet (which does not of course exist) called?