China isn't wasting any time getting its space station ducks in a row. After launching the first piece of the Tiangong (Heavenly Palace) in late September, the country has already put its first companion craft, Shenzhou-8, into orbit alongside it. The Shenzhou is another unmanned craft, packed with a collection of 17 biological experiments. The real fun though, will begin on day three of its mission, when it attempts an automated docking with the Tiangong. Being able to send up unmanned supply vehicles has its obvious advantages, but this is only a test run -- don't expect se
