围绕土星和它的卫星运行的卡西尼号探测器证实了卫星外逸层的存在。
The presence of the moon’s exosphere was confirmed by instruments on the Cassini probe which orbits Saturn and its moons.
卡西尼号探测器从几十亿公里以外的太空将土星和其卫星的壮观影像不断传回地球来。
From a billion miles away, the Cassini spacecraft continues to send spectacular images of Saturn and its moons.
自2004年以来一直在研究土星的美国宇航局卡西尼号探测器检测到了闪烁在土星极地的光线。
The flickering lights at the planet's poles were detected by Nasa's Cassini spacecraft, which has been studying Saturn since 2004.
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