火星上闪闪发光的云
(原标题: The Shining Clouds of Mars)
2021-06-05
浏览次数: 32
在这张由好奇号火星探测器的桅杆照相机拍摄的马赛克照片中，风化和分层的默库山表面隐约出现在前景中。这张照片由21张单独的照片组成，拍摄于3月19日日落之后，这是好奇号在火星上继续探索的第3063天。在火星的黄昏时分，高空云层仍然在上面闪耀，反射着当地地平线下太阳的光，就像地球上的夜光云一样。虽然水冰云在稀薄的火星大气中飘过，但这些细云也位于极端海拔，可能是由冰冻的二氧化碳，干冰晶体组成的。“好奇号”的桅杆摄像头也拍摄到了彩虹云或珍珠母云，为火星的天空增添了微妙的色彩。
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The weathered and layered face of Mount Mercou looms in the foreground of this mosaic from the Curiosity Mars rover's Mast Camera. Made up of 21 individual images the scene was recorded just after sunset on March 19, the 3,063rd martian day of Curiosity's on going exploration of the Red Planet. In the martian twilight high altitude clouds still shine above, reflecting the light from the Sun below the local horizon like the noctilucent clouds of planet Earth. Though water ice clouds drift through the thin martian atmosphere, these wispy clouds are also at extreme altitudes and could be composed of frozen carbon dioxide, crystals of dry ice. Curiosity's Mast Cam has also imaged iridescent or mother of pearl clouds adding subtle colors to the martian sky.