Snow Snow Snow refers to forms of ice crystals that precipitate from the atmosphere (usually from clouds) and undergo changes on the Earth's surface. It pertains to frozen crystalline water throughout its life cycle, starting when, under suitable conditions, the ice crystals form in the atmosphere, increase to millimeter size, precipitate and accumulate on surfaces, then metamorphose in place, and ultimately melt, slide or sublimate away. Snowstorms organize and develop by feeding on sources of atmospheric moisture and cold air. Snowflakes nucleate around particles in the atmosphere by attracting supercooled water droplets, which freeze in hexagonal-shaped crystals. Snowflakes take on a
Ice Warrior Ice Warrior The Ice Warriors are a fictional extraterrestrial race of reptilian humanoids in the long-running British science fiction television series "Doctor Who". They were originally created by Brian Hayles, first appearing in the 1967 serial "The Ice Warriors" where they encountered the Second Doctor and his companions Jamie and Victoria. In "Doctor Who", the Ice Warriors originated on Mars, which within the series narrative is a dying world. Their early appearances depict the Ice Warriors as attempting to conquer the Earth and escape their planet as early as Earth's Ice Age. A frozen group are discovered by an Earth