... Credit Copyright: NASA , Johns Hopkins Univ./ APL , Southwest Research Institute Explanation: A mountainous region informally known as Tartarus Dorsa sprawls some 530 kilometers (330 miles) across this Plutonian landscape . ... Shadows near the terminator, the line between Pluto's dim day and night, emphasize a rough, scaly texture . The stunning image resolves details on the distant world about 1.3 kilometers (0.8 miles) across. ... NASA Web Site Statements, Warnings, and Disclaimers . ...