Re: Question from ASTRO

John Pike (
Thu, 12 Dec 1996 07:28:46 -0500

At 12:20 AM 12/12/96 -0500, (Philip Chien) wrote:
>Willie Koorts <> asked for Andres Valencia <>:
>>According to Eric J. Chaisson in "The Hubble Wars";  HST was down to a
>>356 miles orbit when serviced .."it had fallen some 25 miles in 43 month
>>deployed at 380 miles
>take anything which Eric Chaisson says in his book with a grain of salt.

One might also take all this with a conversion table handy:

        conversion       deployed        serviced        fallen      

nm      1852                331                 311            20     
sm      1609                380                 356            25    
km      1000                608                 498            40         

>Eric was the head of education at the Space Telescope institute, and
>not somebody who was within the NASA system, or understood how the NASA
>system works.

I am at a loss to comprehend just how one would meaningfully define "within
the NASA system" -- particularly as a precondition for understanding "how
the NASA system works."


John Pike
Director, Space Policy Project
Federation of American Scientists
307 Massachusetts Ave. NE
Washington, DC 20002
V 202-675-1023,   F 202-675-1024,