Discovered in 1930, Pluto has always been a mere dot of light in even the largest earth-based telescopes. Pluto is smaller than our Moon and 12,000 times farther away.
However, using the Faint Object Camera on the Hubble Space Telescope, Pluto's surface has been observed.
This enhanced image shows that Pluto is an unusually complex object, with more large-scale contrast than any planet, except Earth.
Does Pluto emit radio waves?