The powerful Hubble Space Telescope has snapped the best images of Mars ever taken from Earth. Sharp-eyed optics on the orbiting facility resolved features on the red planet as small as 10 miles (15 kilometers) across. A little help from Mars itself made taking the up-close pictures possible. Last month, Mars and Earth were at the closest points in their respective orbits. Distance between the two worlds was 43 million miles (68 million kilometers). That