Silicon Investor (SI) -- The First Internet Community

STOCKTALK

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor. We ask that you disable ad blocking while on Silicon Investor in the best interests of our community. If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.

Politics : Formerly About Advanced Micro Devices -- Ignore unavailable to you. Want to Upgrade?

To: combjelly who wrote (564071)	4/30/2010 10:05:21 PM
From: bentway	Read Replies (2) \| Respond to of 1575179

There's also the assumption they'd be expecting communication within the electromagnetic frequencies we use. Broadcast communications are on the downswing, while cable, cell and satellite are taking over. We have no idea how aliens would communicate. Pheromone, colors, tachyons, telepathy - we probably can't imagine what they actually do.

To: combjelly who wrote (564071)	5/1/2010 1:23:32 PM
From: tejek	Respond to of 1575179

Using the original values, you would expect there to be about 10 such civilizations in the galaxy. I would be shocked if this number was correct. If it is correct, the odds of finding one another would be nearly infinitesimal. In that case, the odds are pretty close to zero that one would be within 35 light years of Earth. But, there are reasons to think his figures might be way too conservative. But, even so, a sphere 70 light years in diameter is an extremely small fraction of the galaxy. Our galaxy is 100k light years across and about 1000 thick. It is a big place. I guess I've always assumed that there are civilizations that are considerably older than us and far more advanced. Maybe that's not true.