Picture Scramble # 48

3 November 2000

This picture shows the planet Neptune as it would appear from a spacecraft approaching Triton, Neptune's largest moon. The bottom of Triton shows a wind and sublimation-eroded south polar cap. A cryovolcanic terrain is at the upper right. Triton's surface is mostly covered by nitrogen frost mixed with traces of condensed methane, carbon dioxide, and carbon monoxide.