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- Wed Oct 05, 2005 2:37 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD Oct.03, 2005 Hyperion
- Replies: 44
- Views: 14381
Hyperion
My first impression was of a piece of pumice rock. I used to live on the Columbia River, downstream from Mt. St. Helens. Pumice from that volcano was so light that it would literally float in water. My understanding that pumice is formed by rapid out-gassing and cooling of molten material. Perhaps t...