... Saturn's Rings Seen Sideways . ... The Sun Sets on Comet Hyakutake . ... Comet Hyakutake is seen here just as the Sun sets on April 22. As April draws to a close, Comet Hyakutake will be visible only just after sunset and will be hard to discern against the brightly lit sky. Apollo 14: Rickshaw Tracks Across the Moon . ... A Giant Globular Cluster in M31 . ... G1, pictured above, is the brightest known globular cluster in the whole Local Group of galaxies. ... April . ...