From: LARRY KLAES (ljk4_at_msn.com)
Date: Sat Feb 14 2004 - 08:15:24 PST
>From: Pete Heist <peteheist_at_yahoo.com>
>To: public_at_setileague.org
>Subject: SETI public: search for artificial lighting
>Date: Fri, 13 Feb 2004 15:50:03 -0800 (PST)
>
>This is a long shot, but I'm wondering- what about
>searching for artificial lighting? What if ET uses
>sodium vapor or mercury vapor lights, and they're on a
>huge, brightly lit planet with heinous light
>pollution? What if we swing our largest telescope
>towards some of the known extrasolar planets and try
>to look for a pre-supposed spectral change over time?
>
>I think what a fixed outside observer would see on
>Earth (if they could) is daily and yearly cycles of
>artificial light intensity changes of various types as
>earth rotates and revolves and seasons change.
>
>I could easily talk myself out of the practicality of
>this, the distances, the low signal strength, the
>inability to distinguish between what's natural and
>artificial, the inability to resolve details right
>next to a star and once we see something, the
>inability to prove that it comes from an
>intelligence...just throwing out a line for some
>feedback. What might we speculate that remote
>artificial lighting like ours looks like from this
>vantage point, or what clues might give it away?
>
>cheers,
>Pete
>
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