It would seem to me that the search for interesting Extra Solar Planets would be those which would be able to see a transit of the earth or our solar system. That planet could have observed our transits, and have looked at our atmosphere, and possibly discovered our existence.
Posted by Tom Munnecke at February 14, 2004 05:56 PM
Having a "paired" relationship with such a planet could provide an interesting analysis... what if they have already discovered our transit, and are doing something from their planet to signal us? If so, what could that be? And if we discover a paired planet somewhere, what would our signal be?