... A powerful tool, the Hubble Space Telescope's new STIS instrument, makes it possible to map out the cloud velocities - producing this false color "velocity map" for the central regions of NGC4151. Jupiter's Dry Spots . ... In December of 1995, Galileo's atmospheric probe descended into Jupiter's clouds and reported a surprising absence of water. ... Apollo 15 astronaut James Irwin works on the first Lunar Roving Vehicle, before he and fellow astronaut David Scott take it out for a drive. ...