... The Cosmic X-Ray Background . ... With brilliant Venus above the western horizon at sunset and Jupiter and Saturn high in the east by early evening, November's night sky is filled with bright planets. October's sky featured bright planets as well and, triggered by the active Sun, some lovely auroral displays. ... Spanning 40 degrees across the sky, the nebula is so large and faint it is easily lost in the din of a bright and complex background. ... Double Asteroid 90 Antiope . ...