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From: mcdonald@aries.scs.uiuc.edu (Doug McDonald)
Newsgroups: sci.space
Subject: Re: Spy satellite coverage of the Gulf
Message-ID: <1991Feb7.203431.27574@ux1.cso.uiuc.edu>
Date: 7 Feb 91 20:34:31 GMT
References: <7000.27b11bd8@cc.curtin.edu.au> <14230@ganymede.inmos.co.uk> <4409@syma.sussex.ac.uk>
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In article <7000.27b11bd8@cc.curtin.edu.au> Gumley_LE@cc.curtin.edu.au (Liam Gumley) writes:
>
>Visible sensors obviously only work during the daytime. 

No so. Have you ever noticed that you can see things at night? Modern
electronic sensors can do even better. Moonlight gives enough light
for anything. Starlight is sufficient for many purposes.


Doug McDonald