Deimos and The Resurrection of Mars Deimos and The Resurrection of Mars Deimos and The Resurrection of Mars consistute a two-part audio drama based on the long-running British science fiction television series "Doctor Who". The audio drama was produced by Big Finish Productions. On the Martian moon Deimos, the Ice Warriors sealed themselves away when their planet was rendered inhospitable. By the 23rd Century, they were believed to be extinct and Mars and its moons became popular tourist destinations for humans. But now the Ice Warriors are awake. And they want Mars back. The Ice Warriors are willing to kill every human colonist on Mars in
Definition of planet to 400 astronomical units from the star. A Mars-mass body at the orbit of Pluto clears its orbit. This metric, which leaves Pluto as a dwarf planet, applies to both the Solar System and to extrasolar systems. Some opponents of the definition have claimed that "clearing the neighbourhood" is an ambiguous concept. Mark Sykes, director of the Planetary Science Institute in Tucson, Arizona, and organiser of the petition, expressed this opinion to National Public Radio. He believes that the definition does not categorise a planet by composition or formation, but, effectively, by its location. He believes that a Mars-sized or