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RE: (meteorobs) Excerpts from "CCNet 123/2001 - 22 November 2001"

Great explanation, Rob!

Thanx

Wayne from New Jersey

----------
From: 	Rob McNaught[SMTP:rmn@aaocbn.aaodot gov.AU]
Sent: 	Wednesday, December 05, 2001 5:29 PM
To: 	meteorobs@atmob.org
Subject: 	RE: (meteorobs) Excerpts from "CCNet 123/2001 - 22 November 2001"

On Wed, 5 Dec 2001, Robert Hayden wrote:

> Riddle me this.  If all meteors from comets are very fragile dust grains,
> explain the flashes on the moon.  If, on one hand we readily accept that the
> dust trails include chucks that are large enough to generate a flash on the
> moon visable from Earth, isn't it plausible that similarly sized chunks hit
> Indiana?  Not that I would uncritically accept the story of the Yurans
> (presumably from the planet Yura), but the out-of-hand dismissal by
> astronomer Hammergren seems rash in view of the lunar observations.

Image 10kg of flour in a paper bag.  It will hit the Moon with the
same kinetic energy as a 10kg metal block (or 10kg of feathers or whatever).
The same bag of flour hitting the atmosphere will soon lose the
protective bag and the loose flour would cause a dramatic flare in
brightness as the surface area is massively increased in a fraction of a
second.  It dissipates high in the atmosphere and no meteorite reaches the
Earth's surface.

Cheers, Rob

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The archive and Web site for our list is at http://www.meteorobs.org
If you are interested in complete links on the 2001 LEONIDS, see:
http://www.meteorobs.org/storms.html
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