Journey back to the beginning of history on a mind-blowing adventure through space and time. Using stunning HD graphics, the Universe returns in Season four to transport viewers past the wonders of our own solar system and out to the bizarre far-flung reaches of the cosmos. From death stars to ringed planets, star clusters to space wars, the Universe uses new discoveries and more advanced CGI to help explain the mysteries of outer space. From wormholes to transporters, examine which elements from popular sci-fi movies could really exist; and discover how the universe is awash in all sorts of strange liquids, from oceans of methane to blobs of alcohol floating in space, and even iron rain. Watch and marvel as experts cook up ten ways to destroy the Earth, including blowing it up with anti-matter, hurling it into the Sun, and colliding with another galaxy. This special edition 4-DVD set features all 12 episodes from Season Four plus additional never-aired segments.