... Mars and the Star Clusters . ... This evening's skyscape includes a view similar to this one, recorded in western skies on April 16 - an orange-hued planet Mars wandering near rich open star cluster M35. ... Appropriately nicknamed "the Skull Nebula", planetary nebula NGC 246 really does surround a dying star some 1,600 light-years away in the constellation Cetus. ... Progenitor hypotheses include the winds from bright Orion stars and the supernovas of stars long gone. ... Binary Black Hole in 3C 75...