Re: Is human produced space dust different?

From: Sean Williams (
Date: Wed Feb 13 2002 - 13:32:28 MST

I don't know if the link below inspired Mike's question, but I provide
it here for synchronicity's sake, given that the former arrived just a
couple of posts after the latter at my end.

* Our Solar System as Seen by Alien Astronomers

"If alien astronomers from a nearby star system pointed their version
of the Hubble Space Telescope at Earth, astronomer Markus Landgraf
believes they would not see our planet but they would find hints of
our presence."


----- Original Message -----
From: "Mike Lorrey" <>
To: <>
Sent: Thursday, February 14, 2002 2:36 AM
Subject: ET: Is human produced space dust different?

> This is directed primarily at our resident dust bunny, Amara Graps,
> anyone is free to comment, of course.
> Question: Given that Hubble can view the dust disks around other
> systems, and do spectral analyses of same, would it be possible to
> detect alien technological civilizations by differences in natural
> artificially produced space dust in such star systems? If someone in
> another star system looked at our solar system with their own Hubble
> type telescope, could they detect our presence by human produced
> dust?
> Mike Lorrey

This archive was generated by hypermail 2.1.5 : Fri Nov 01 2002 - 13:37:39 MST