... The center of nearby giant galaxy M87 is a dense and violent place. ... Hale-Bopp in Stereo . ... Simulating stereo vision, the difference was generated by the comet's apparent motion as it cruised through the inner Solar System. Earth, Clouds, Sky, Comet . ... Does a comet's dust tail always orbit behind it? ... Which is closer: the comet or the galaxy? ... NGC 3242: The 'Ghost of Jupiter' Planetary Nebula . ... Cen A is marked by dramatic dust lanes that run across the galaxy's center. ...