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- Wed Dec 09, 2009 1:48 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Ice Moon Tethys from Saturn Orbit... (2009 Dec 08)
- Replies: 15
- Views: 5690
Re: Ice Moon Tethys from Saturn Orbiting Cassini (2009 Dec 0
in looking at the amazing image of Tethys something unusual jumps out in the center of the moon. It is an almost perfectly symmetrical “tombstone-shaped” pentagon right on the moon’s equator and just to the right of Ithaca Chasma. Is this an artifact of imaging or something more? Nature doesn’t prod...