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Date: | Mon, 12 Feb 2007 16:31:19 -0500 |
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Depends on how you define "space". Outer space is generally considered
to begin at a distance of between 50 and 62 miles above the planet's
surface (that's American and European space, respectively). The shuttle
usually orbits at about 135 miles above the planet, and astronauts
report that you can see the Great Wall(s) at orbits between 100 and 200
miles. They can also see highways, airports, dams, and you can discern
cities from countryside. To get a good look, though, you need binoculars
or a camera with a zoom lens. Great big honking copper pit mines show up
nicely in that 100-200 miles range. They also have a nice 3-D effect in
Google Earth.
-----Original Message-----
From: HISTORICAL ARCHAEOLOGY [mailto:[log in to unmask]] On Behalf Of
geoff carver
Sent: Monday, February 12, 2007 2:55 PM
To: [log in to unmask]
Subject: Re: China to measure the Great Wall
I thought the "visible from space" thing was an urban myth
-----Original Message-----
From: HISTORICAL ARCHAEOLOGY [mailto:[log in to unmask]] On Behalf Of Kate
Dinnel and Silas Hurry
Sent: February 12, 2007 20:41
To: [log in to unmask]
Subject: Re: China to measure the Great Wall
I recall Bill Rathje commenting that other than the Great Wall of China
that the only human construct visible from space is the Fresh Kills
landfill on Staten Island.
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