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Originally posted by Frosty
When did this become a stellar astrophysics and cosmological discussion? I'll chime in: Has anyone thought of the possiblity that life on Earth is the first and so far only life to have existed anywhere in the universe? We could very well be trying in hopeless hopeless vein at finding life outside our atmosphere which may not become present or evolve for another 10 billion years or ever!
Originally posted by Frosty
When did this become a stellar astrophysics and cosmological discussion? I'll chime in: Has anyone thought of the possiblity that life on Earth is the first and so far only life to have existed anywhere in the universe? We could very well be trying in hopeless hopeless vein at finding life outside our atmosphere which may not become present or evolve for another 10 billion years or ever!
Originally posted by mbkennel
Earth had no multicellular life for most of its history.
Our solar system formed 5 billion years ago, but it is quite feasible
for other solar systems to have formed 10 billion years ago.
So having a billion year head start on us is very simple.
Originally posted by sardion2000
Doesn't EM dissipate with distance? We could be bombarded with intelligent signals right now but so degraded that they look indistiguisable from the background. What would be the max range? What would be the EM window(by that I mean the amount of time a civ uses non-coherent EM frequencies as their primary communications method)? Would it be 50 years? 100? Laser communications would not be detected by use unless it was aimed directly at us and that may be the most desirable method of communication for aliens to use(assuming that FTL communication is impossible)
Originally posted by bodebliss
You're 40's .
You might live long enough to see eternal health.
This is the age of the exponential growth of knowledge.
Gooogle: The Singularity
PS: Welcome Aboard!
Thank you for the very kind welcome
DON
Originally posted by bodebliss
You'd like to do amazing travel , huh?
Well I have just the ticket for you and it only cost ten dollars.
You can when near death(if it's possible) travel to the future, be made young again, and live as long as you want as a $$trillionare$$.
www.timetravelfund.com...
Don't say I never gave you anything. Ten bucks! Can't be beat!
PS: Be sure to read the whole site.
Originally posted by sardion2000
Doesn't EM dissipate with distance? We could be bombarded with intelligent signals right now but so degraded that they look indistiguisable from the background. What would be the max range? What would be the EM window(by that I mean the amount of time a civ uses non-coherent EM frequencies as their primary communications method)? Would it be 50 years? 100? Laser communications would not be detected by use unless it was aimed directly at us and that may be the most desirable method of communication for aliens to use(assuming that FTL communication is impossible)
Now what if most of civilizations out there are are 100,000 or more years ahead?