Path: ...!local-3.nntp.ord.giganews.com!Xl.tags.giganews.com!local-1.nntp.ord.giganews.com!nntp.supernews.com!news.supernews.com.POSTED!not-for-mail NNTP-Posting-Date: Sat, 29 Jun 2024 20:16:38 +0000 From: john larkin Newsgroups: sci.electronics.design Subject: Re: Expedition to Europa Date: Sat, 29 Jun 2024 13:16:38 -0700 Message-ID: References: <63br7jpf7le468rnljlfhaol4432dt70lq@4ax.com> <667f96cb$0$2873004$882e4bbb@reader.netnews.com> <7b16lkx733.ln2@Telcontar.valinor> User-Agent: ForteAgent/8.00.32.1272 MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit Lines: 53 X-Trace: sv3-mstK/FoOK2dFyOE2ET3IBg4dSxoj5FD7kN4U8WDjHJffgzJP4u37zylcfODHAYR4nE/xKjqGZo97N3q!c0iuTLJo1rzjKJEtK1Vpw08cD/YaryDTvD8NgUrxElzlGSZ0ByBppfoXXhiNo6Iq9WAakkSnAzvn!zcsOBQ== X-Complaints-To: www.supernews.com/docs/abuse.html X-DMCA-Complaints-To: www.supernews.com/docs/dmca.html X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint properly X-Postfilter: 1.3.40 Bytes: 3532 On Sat, 29 Jun 2024 20:45:27 +0200, "Carlos E.R." wrote: >On 2024-06-29 17:35, Joe Gwinn wrote: >> On Sat, 29 Jun 2024 04:04:11 -0700, Don Y >> wrote: >> >>> On 6/28/2024 10:08 PM, bitrex wrote: >>>> On 6/27/2024 5:17 PM, Don Y wrote: >>>> >>>>>> Most big librarys carry AW. >>>>>> >>>>>> . >>>>>> >>>>>> If it turns out that there is life in the ocean of Europa, which has >>>>>> existed for something like four billion years, it supports the general >>>>>> idea of "random but inevitable" theories of Abiogenesis. >>>>> >>>>> _Remembrance of Earth's Past_ has an interesting take on the whole >>>>> notion behind an "empty" universe.  It's a tedious read (mainly for >>>>> me coming from a non-chinese culture... just keeping track of the >>>>> characters is difficult) but has some good ideas to chew on at its core. >>>> >>>> My guess: The Universe is mammoth, the technological and energy requirements of >>>> even short-distance interstellar travel are immense, the lifespan of >>>> technological civilizations is highly time-limited before such a civilization >>>> destroys itself, technological civilizations are very rare to begin with, and >>>> no technological civilization ever survives long enough to attempt it. >>> >>> That wouldn't explain why there are no *signs* of intelligent life. >>> >>> *We* can't (yet) travel interstellar distances in single lifetimes >>> but I'm sure anyone with technology comparable to ours would be able to >>> *detect* our presence (given that we seem to make no attempt at "hiding") >>> >>> _If the Universe Is Teeming with Aliens ... WHERE IS EVERYBODY?_ gives some >>> interesting takes on the Fermi paradox. >> >> That's a bit self-important. >> >> If the universe is teaming with life, but alien civilizations capable >> of interstellar travel are exceedingly rare, there would be little >> reason for those spacefaring aliens to visit any but the other >> advanced alien civilizations. > >But why can we not detect them, by radio or something? Surely we would >have seen them already. > >It is not about visiting. Radio is just a brief phase that a civilization goes through. We're about over it now.