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1 Great White Snark  May 11, 2015 12:16:30pm

What I don’t get is why we are expected to see visible signs in some spectrum or another from other galaxies in this tiny window of time our tech represents. All this says is nobody is close, or was close when some signal may have left it’s destination. 10,000 light years away=10,000 years ago for it’s transmission.

if a thousands of such civilizations came up at any time in our human era, they are invisible to us for millennia to come. Whole epochs perhaps.

Maybe at any given time there is a bare handful in any particular galaxy. And those not close to one another by any rational measure.

Of course metastability could be the terrifying answer. Everyone that becomes visible gets wiped out by a stealthy xenophobic civilization. Deep sky radar search anyone?

2 freetoken  May 11, 2015 3:25:31pm

re: #1 Great White Snark

I’m pretty convinced this “paradox” is no such thing, and that it is hubris to think that we’ve been around long enough to observe enough to notice anything.

And as you point out, the overlap in existing civilizations are such that one has to be at just the right place and time to catch any photons they might throw at us.

Furthermore, given the inverse square law, even our most powerful broadcasts fade into the background noise after a few light years. If another civilization ever used radio then their transmissions too will be lost into the background noise after a few light years.

If we ever do detect intelligent life, I suspect it will be by observing their planet’s atmosphere as the planet eclipses the star, and we detect non-natural chemicals in the atmosphere.

3 CriticalDragon1177  May 11, 2015 3:55:59pm

re: #2 freetoken

Excellent point. Except might those “non natural” chemicals have a natural explanation that we might not know about? What non natural chemicals are we pumping into our atmosphere? Pumping huge amounts of carbon dioxide into our atmosphere like we’re doing now, certainly isn’t a good thing, but we could find a natural explanation if we saw the same thing happening on another planet, circling a distant star, such as massive volcanic activity.

4 Romantic Heretic  May 11, 2015 3:58:16pm

I suspect this is the reason we haven’t had contact with advanced extraterrestrial life.

5 CriticalDragon1177  May 11, 2015 4:33:09pm

re: #4 Romantic Heretic

LOL! That’s funny, but sadly, probably true.

6 FemNaziBitch  May 12, 2015 3:57:53am

Where are the aliens?

They are among us.

:)

7 CriticalDragon1177  May 12, 2015 9:43:42am

re: #6 FemNaziBitch

Oh no, you know the truth. Now the men and black are going to come and use their memory eraser on you. ;)


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