土卫二上新鲜的虎纹
(原标题: Fresh Tiger Stripes on Saturn's Enceladus)
2024-08-25
浏览次数: 20
土星卫星土卫二上的峡谷里有地下海洋吗？众所周知，被称为“虎纹”的长特征将冰从月球冰冷的内部喷射到太空中，在月球南极上空形成了一团细小的冰粒云，并形成了土星神秘的e环。这一点的证据来自于卡西尼号机器人航天器，该航天器于2004年至2017年绕土星运行。图为近距离飞掠土卫二时拍摄的高分辨率图像。这种不寻常的表面特征被称为虎纹，在假蓝色中可见。为什么土卫二是活跃的仍然是一个谜，因为邻近的土卫一，大约相同的大小，似乎已经死了。对喷射出的冰粒的分析表明，土卫二内部存在复杂的有机分子。这些大的富含碳的分子支持——但不能证明——土卫二表面下的海洋可能存在生命。探索你的宇宙：随机APOD生成器
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Do underground oceans vent through canyons on Saturn's moon Enceladus? Long features dubbed tiger stripes are known to be spewing ice from the moon's icy interior into space, creating a cloud of fine ice particles over the moon's South Pole and creating Saturn's mysterious E-ring. Evidence for this has come from the robot Cassini spacecraft that orbited Saturn from 2004 to 2017. Pictured here, a high resolution image of Enceladus is shown from a close flyby. The unusual surface features dubbed tiger stripes are visible in false-color blue. Why Enceladus is active remains a mystery, as the neighboring moon Mimas, approximately the same size, appears quite dead. An analysis of ejected ice grains has yielded evidence that complex organic molecules exist inside Enceladus. These large carbon-rich molecules bolster -- but do not prove -- that oceans under Enceladus' surface could contain life. Explore Your Universe: Random APOD Generator