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月球 水星 金星 土衛二發現城市建築 泰坦 Titan星 發現湖水


The video is made for education and research purpose.

Source:
Facebook Group: Mars – X Files
https://www.facebook.com/groups/1631083680490454/
NASA / JPL-Caltech / Malin Space Science Systems
張先生影片:

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