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.
每个影像都有特定的时间和空间特性，是对地球生命的记录。
Each camera-trap image is a record of an animal in space and time, a record of life on Earth.
从卫星影像中可以发现，北极地区冰盖迅速融化，其升温速度比地球其它地区要快2倍(是地球其它地区的3倍)。
Satellite imagery reveals rapidly melting ice sheets in the Arctic, a region which is heating up three times more quickly than the rest of the Earth.
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