... Glowing gas clouds are streaming from the core of galaxy NGC4151 at hundreds of thousands of miles per hour. ... Jupiter's Dry Spots . ... Known for its spectacular images of Jupiter's moons, Io, Ganymede, Callisto, and Europa, the robot spacecraft Galileo has also aggressively explored the Jovian atmosphere. In December of 1995, Galileo's atmospheric probe descended into Jupiter's clouds and reported a surprising absence of water. ... An Auroral Ring on Jupiter . ... Small Star . ... 1995 1996 . ...