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FYI: Saturn-Like Ring Around the Earth
- To: <meteorite-list@meteoritecentral.com>
- Subject: FYI: Saturn-Like Ring Around the Earth
- From: "Lou Varricchio" <morbius@together.net>
- Date: Sun, 21 Mar 1999 06:24:46 -0800
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- Resent-Date: Sun, 21 Mar 1999 06:22:17 -0500 (EST)
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Subject: Saturn-Like Ring Around the Earth
FYI: The April 1999 issue of DISCOVER science magazine, p. 20, has a story
about two U.S. scientists proposing that a ring of ejecta by the so-called
K-T impactor created a temporary ring around the Earth whose shadow had a
profound affect on climate change at the end of the Cretaceous. Well, this
isn't a new idea--astronomer John A. O'Keefe, NASA Goddard (retired)
predicted two rings during the K-T and Eocene events. O'Keefe linked this
ring with tektite falls. However, O'Keefe attributed the ring formation to
silicic volcanic eruptions on the Moon. Personally, I'm thrilled to see
O'Keefe vindicated in
this area!
Lou Varricchio
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