Astronomy Picture of the Day . ... Three years ago results were first presented indicating that most of the energy in our universe is not in stars or galaxies but is tied to space itself. ... Neptune's Great Dark Spot: Gone But Not Forgotten . ... When NASA's Voyager 2 spacecraft flew by distant Neptune in August of 1989, astronomers were shocked. ... Indeed similar sights are astonishingly familiar world-wide to witnesses of this November's fireball-rich Leonid meteor storm. ... August 2009 . ...