Pluto's surface is coated in ice made of water, methane, and nitrogen and is believed to have a rocky core and possibly a deep ocean. ?
Taken by our New Horizons spacecraft at a distance of 22,025 miles (35,445 km), this image shows Pluto's true colors, including the "heart" of the dwarf planet - a Texas-and-Oklahoma-sized glacier made of nitrogen and methane.'' .
With its average temperature of -387F (-232C) - Pluto's surface is coated in ice made of water, methane, and nitrogen and is believed to have a rocky core and possibly a deep ocean.