A 50 mile (80 kilometer) trip across Pluto would cover the distance indicated by the scale bar in this startling
image. The close-up of the icy world's rugged equatorial terrain was captured when the New Horizons spacecraft was about 47,800 miles (77,000 kilometers) from the surface, 1.5 hours
before its closest approach. Rising to an estimated 11,000 feet (3,500
meters) the mountains are likely composed of water ice. Suggesting
surprising geological activity, they are also likely young with an
estimated age of 100 million years or so based on the apparent absence of
craters. The region pictured is near the base of Pluto's broad, bright, heart-shaped feature.