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Science

Orsino

(37,428 posts)

19. Big Bang, plus a few billion years for many first generation stars to nova...

Reply to MarkCharles (Reply #3)

Wed Dec 21, 2011, 03:46 PM

Dec 2011

...plus a few billion more years for many second generation stars to form solar systems, then a few billion more for intelligent life to arise?

Interstellar spacefaring may have only occurred in the last few billion years.

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Darwin's Extraterrestrials [View all] Swede Dec 2011 OP

That's what I would do. Camouflage myself. mainer Dec 2011 #1

This message was self-deleted by its author guyton Dec 2011 #2

We're already doing that... ElboRuum Dec 2011 #7

Well, assuming we all agree about the big bang as the starting point MarkCharles Dec 2011 #3

Big Bang, plus a few billion years for many first generation stars to nova... Orsino Dec 2011 #19

Or perhaps sufficiently advanced technology may only be detectable with magical means? Fumesucker Dec 2011 #4

Not to mention interference... Humanist_Activist Dec 2011 #6

And compression and encryption make signals look like noise. nt bananas Dec 2011 #10

Or maybe they found some other way to communicate Confusious Dec 2011 #11

Certainly possible... Humanist_Activist Dec 2011 #13

My thinking also Confusious Dec 2011 #14

That's my take on it Dead_Parrot Dec 2011 #15

A good book on the subject pokerfan Dec 2011 #5

Sounds good. I just ordered it. n/t krispos42 Dec 2011 #8

Where is Everybody...Really? frogmarch Dec 2011 #9

Considering a Large portion of the population of this planet Confusious Dec 2011 #12

It is also possible that interstellar travel is harder than we think it is Motown_Johnny Dec 2011 #16

I suspect we're already being observed. If a civilization were sufficienty advanced, Phoonzang Dec 2011 #17

Nonsense. Orsino Dec 2011 #18