In message , Chris
writes
Well, most are very far away out of radar range, beyond Jupiter and indeed
the black paint does have a low radar reflectivity.

I do not understand if or why the do or do not emitt in the IR as they are
likely to be quite hot. I would have thought they would be glaringly
obvious in the IR. Since there engines emit up to 10^17 watts in the 2 GHz
radio spectrum then this, too, should be glaringly obvious.

It could be that you are just not paying attention.

Or pass your observation off as a natural object.

Chris.

Shouldn't this be directed to an SF group - or alt.usenet.kooks?
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