... Exceptional Rocket Waves Destroy Sun Dog . ... Close inspection of the above image shows not only a rocket rising near the center, but unusual air ripples around it and a colorful sundog to the far right. ... Pictured above, several of the dwarf galaxies of in the Hickson Compact Group 31 are seen slowly merging. ... This past weekend, humanity's Saturn-orbiting Cassini spacecraft passed as close to Saturn's small moon Calypso as it ever has, and imaged the small moon in unprecedented detail. ...