Prehistoric meteor shower? |
Prehistoric meteor shower? |
Dec 13 2007, 07:02 PM
Post
#1
|
|
Member Group: Members Posts: 688 Joined: 20-April 05 From: Sweden Member No.: 273 |
A real weird news story from Nature about meteor damage to pleistocene fossils:
http://www.nature.com/news/2007/071212/ful...s.2007.372.html If traces of this meteor shower has been found in both Siberia and Alaska as the story implies, then multiple impactors must have been involved. Such small meterites would lose speed quickly so the airburst must have occurred at fairly low altitude. |
|
|
Dec 16 2007, 03:03 PM
Post
#2
|
|
Founder Group: Chairman Posts: 14434 Joined: 8-February 04 Member No.: 1 |
There are records of ancient people using meteoritic material in tools etc - they were highly prized as they didn't know how to make their own metal at the time. Makes a LOAD more sense to me. Little fragments wouldn't be travelling at high speed. They'd loose all their energy really quickly. (consider the old penny-from-tall-building myth - which is indeed a myth)
The chance of a fragment small enough to make those marks, travelling fast enough to make those marks, and 'hot' enough to scortch them...sorry - I find that very hard to believe Doug |
|
|
Lo-Fi Version | Time is now: 24th September 2024 - 09:38 AM |
RULES AND GUIDELINES Please read the Forum Rules and Guidelines before posting. IMAGE COPYRIGHT |
OPINIONS AND MODERATION Opinions expressed on UnmannedSpaceflight.com are those of the individual posters and do not necessarily reflect the opinions of UnmannedSpaceflight.com or The Planetary Society. The all-volunteer UnmannedSpaceflight.com moderation team is wholly independent of The Planetary Society. The Planetary Society has no influence over decisions made by the UnmannedSpaceflight.com moderators. |
SUPPORT THE FORUM Unmannedspaceflight.com is funded by the Planetary Society. Please consider supporting our work and many other projects by donating to the Society or becoming a member. |