Dr Pitman and his colleague Dr John Durban helped a BBC film crew capture their behaviour for the TV documentary series Frozen Planet(FP), to be shown later this month. 皮特曼博士和他的同事,约翰·德班博士,帮助BBC拍摄的虎鲸捕食猎物的纪录片,冷冻星球,将在这个月的晚些时候上映。
Frozen water is known to exist in the planet's polar regions, and water vapor has been detected in the Martian atmosphere. 已经知道有固态水在这颗行星的极地区域存在,水蒸汽也已经在火星大气中发现。
The photographs actually show sand dunes coated with a thin layer of frozen carbon dioxide, or dry ice, less than 240 miles from the planet's north pole. 这张图片实际显示的,是距离火星北极不足240英里的沙丘上覆盖的一层薄薄的冰冻二氧化碳、或干冰。