... Pangea Ultima: Earth in 250 Million Years . ... A fantastic jumble of young blue star clusters, gigantic glowing gas clouds, and imposing dark dust lanes surrounds the central region of the active galaxy Centaurus A. This mosaic of Hubble Space Telescope images taken in blue, green, and red light has been processed to present a natural color picture of this cosmic maelstrom. ... September Sky . ... In 1979 the Voyager 1 spacecraft compiled this view as it approached the gas giant Jupiter. ...