... No sudden, sharp boundary marks the passage of day into night in this gorgeous view of ocean and clouds over our fair planet Earth. ... Dust pillars are like interstellar mountains. ... Sharing the night sky seen around the world, this view from Monument Valley, USA includes a picturesque foreground of famous buttes. ... Scroll right and journey from horizon to horizon as your gaze sweeps through the zenith in the night sky over Beg-Meil, France. ... Unusual Silica Rich Soil Discovered on Mars . ...