[meteorite-list] Very Bright Fireball Over Europe on Halloween Night

[Chris Peterson]

Meteor color is important. It's just not a very useful measure for 
determining composition. Color changes with meteor speed and meteor 
depth in the atmosphere. And certainly, the composition is a factor, 
both in terms of chemical composition and bulk properties. But the 
relationship is complex, so there's no simple correlation between these 
things and color that we can make much use of.

Common groups of factors tend to lead to common colors, which is why we 
see specific colors with specific showers.

Chris

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Chris L Peterson
Cloudbait Observatory
http://www.cloudbait.com

On 11/4/2015 3:16 PM, kashuba via Meteorite-list wrote:
> Rob, Marco,
>
> OK, so color isn't important.  But why the different colors?  Not green
> can't mean no oxygen. Is the green overwhelmed by other colors?  Why?
>
> - John
>
> John Kashuba
> Bend, Oregon