NASAのインスタグラム(nasa) - 7月19日 05時19分

What appears to be a floating orb in the blackness of space is actually Saturn’s icy moon Enceladus. Here, intriguing south-polar jets are visible, backlit by sunlight while the moon itself glows softly in reflected Saturn-shine.
Observations of the jets taken from various viewing geometries provide different insights into these remarkable features. Our Cassini spacecraft has gathered a wealth of information in the hopes of unraveling the mysteries of the subsurface ocean that lurks beneath the moon’s icy crust.
This view looks toward the Saturn-facing hemisphere of Enceladus, where north is up. The image was taken in visible light with the Cassini spacecraft’s narrow-angle camera on April 13.
Credit: NASA/JPL-Caltech/Space Science Institute
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