... A Perseid Meteor . ... In dark, moonless, predawn skies you may see dozens of meteors per hour. ... Images from the Cassini spacecraft that slipped into orbit around Saturn last month confirm that the Solar System's most mysterious moon is surrounded not only by a thick atmosphere but also by two distinct spheres of haze. The Dark River to Antares . ... Connecting the Pipe Nebula to the bright star Antares is a flowing dark cloud nicknamed the Dark River. ... Giant Cluster Bends, Breaks Images . ...