Re: Re[2]: Mirror in space

Douglas Gray (
Fri, 24 Jul 1998 15:16:41 GMT

I would be grateful if anyone could tell me how I can receive the emails 
through a digest rather than individual messages.  As there are so many, 
they are cloggin up my inbox.


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>Jim Varney wrote:
>>IMHO the Leonids are overrated as a danger to spacecraft.  Even if the 
>>great 1966 display of 100,000 meteors per hour is repeated, the actual 
>>of meteors is surprisingly thin.  I did a very rough calculation and 
>>that 100,000 meteors per hour works out to less than one meteor per 
>>mile at LEO heights.
>>So my guess is the thin mylar mirror will end up with a few holes but 
>>be destroyed.
>I agree with Jim's assesment of the Leonid "threat".  There's an awful 
lot of
>space up there, and satellites (even Mir) are pretty small targets on 
>>Even though I don't think the meteoroids will be the demise of the 
>>I would still like to see this monstrosity fail.  This project is an 
>>example of gross light pollution and we should all condemn it as such.  
>>wish will be for the mylar to be hopelessly ripped and tangled when 
>>unfurled.  Then I'll join you on the floor for a good laugh!
>Agreed 100 percent!!  This is a just plain stupid idea, and the threat 
>ground-based astronomy would be very real if this hare-brained scheme 
were to
>gain an ounce of credibility.  thankfully I hear that there are 
>problems which may ground the development of this plan.  I don't mind 
>occasional -8 mag Iridium flare, but to have a -14 mag steady beacon 
>down would certainly ruin my night....
>| Geoff Chester       Public  Affairs 
Office |
>|                                                    US Naval 
Observatory |
>| (202) 762-1438                            3450 Massachusetts Avenue, 
NW |
>| (202) 762-1516 (FAX)                              Washington, DC  
20392 |
>| "Each passing hour brings the Solar System 43,000 miles closer to the   
>| globular cluster M13 in Hercules; yet there are still some misfits 
who  |
>| insist there's no such thing as progress!"     --    Ransom K. Fern     

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