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- Mon Oct 03, 2005 5:42 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD Oct.03, 2005 Hyperion
- Replies: 44
- Views: 14952
Hyperion
As a geologist, my first impression of the picture before reading the text was "tektite". After reading about what the thing was, I think that's a pretty good guess. It's ejecta from a serious collision that cooled (rapidly) into a low-density glass-like substance as it passed through an a...