Astronomy Picture of the Day . Neptune's Great Dark Spot: Gone But Not Forgotten . ... Since Neptune receives only 3 percent the sunlight Jupiter does, they expected to find a dormant, dark, frigid planet. ... Meteor Storm Sights and Sounds . ... Indeed similar sights are astonishingly familiar world-wide to witnesses of this November's fireball-rich Leonid meteor storm. ... Extra Solar Planetary Atmosphere Detected . ... Ancient Layered Rocks on Mars . ... Is this a picture of Mars or Earth? ...