Venus
Venus (or Sol II) was the second planet from Sol. Venus was the origin of Venusian aikido and a Venusian lullaby, presumably both created by the native Venusian race. The Humans named it after a woman. (DW: Partners in Crime)
Venusian spearmint also grew on the planet, and is used as a toothpaste flavouring. (DW: The Shakespeare Code)
Venus was also the final obstacle on a race course set up by the Eternals. (DW: Enlightenment)
Wilfred Mott an astronimer when he was talking to his Grandaughter Donna he pointed out that Venus was named after a woman who had termanation to reming Donna never to give up. (DW: Partners in Crime)
In the year 200,000, sandstorms on aplanet known as New Venus kill 200 sentients in the Archipelago. (DW: The Long Game)
