NASA’s New Horizons space probe sent photographs of the area around the dwarf planet Pluto’s north pole taken during the extraordinary July 14, 2015 flyby. The images reveal a series of canyons long and wide in the polar area that at its bottom is about 1,200 km (750 miles) wide. It’s part of the region informally called Lowell Regio after the astronomer Percival Lowell, the founder of the observatory where Pluto was discovered.