Astronomy Picture of the Day . ... Each day can have a beautiful ending as the Sun sets below the western horizon. ... Asteroid 2005 YU55 Passes the Earth . ... What's happening above those clouds? ... Star Forming Region S106 . ... Born only about 100,000 years ago, material streaming out from this newborn star has formed the nebula dubbed Sharpless 2-106 Nebula (S106), pictured above. ... The Sun's photosphere has thousands of bumps called granules and usually a few dark depressions called sunspots. ...