Fifth planet (hypothetical) orbit as defined by the Titius–Bode law. Between 1845 and 1851, eleven additional asteroids were discovered and Jupiter had become the twentieth planet. At this point, astronomers began to classify asteroids as minor planets. Following the reclassification of the asteroids in their own group, Jupiter became the fifth planet once again. With the redefinition of the term "planet" in 2006, Ceres is now considered a dwarf planet. The disruption theory suggests that a planet which was positioned between Mars and Jupiter was destroyed, resulting in the asteroid belt between these planets. Scientists in the 20th century dubbed this hypothetical planet
The Web Planet In North America it was released as a single VHS. It was released on DVD on 3 October 2005 in the United Kingdom (Region 2), 3 November 2005 in Region 4, and 5 September 2006 in Region 1. The Region 1 DVD has been out of print since 2013. The Web Planet The Web Planet is the fifth serial of the second season of the British science fiction television series "Doctor Who", which was first broadcast in six weekly parts from 13 February 1965 to 20 March 1965. The serial involves the time traveller the First Doctor (William Hartnell) and