Astronomy Picture of the Day . Introducing Nova Velorum 1999 . 24.05.1999 . A bright nova was discovered Saturday that is currently visible to the unaided eye in southern skies. ... John U. Obs.), making it more luminous than many famous bright stars. The Keyhole Nebula . ... The dark dusty Keyhole Nebula gets its name from its unusual shape. Officially designated NGC 3324, the Keyhole Nebula is a smaller region superposed on the larger Eta Carina Nebula. ... Europe at Night . ...