How far away in space would we be 'visible' to ourselves?

Subject: How far away in space would we be 'visible' to ourselves?

Date: Wed May 7 19:17:38 1997
Posted by Greg Hines
Grade level: grad
School: No school entered.
City: San Francisco State/Province: California
Country: USA
Area of science: Astronomy
ID: 863050658.As

Message:

 That is to say, how far away could a civilization of our technological 
level be and still be able to detect our civilization (back tracing 
our probes doesn't count)?

Re: How far away in space would we be 'visible' to ourselves?

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