Path: ...!eternal-september.org!feeder3.eternal-september.org!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail From: "Carlos E.R." Newsgroups: sci.electronics.design Subject: Re: Expedition to Europa Date: Sat, 29 Jun 2024 20:45:27 +0200 Lines: 51 Message-ID: <7b16lkx733.ln2@Telcontar.valinor> References: <63br7jpf7le468rnljlfhaol4432dt70lq@4ax.com> <667f96cb$0$2873004$882e4bbb@reader.netnews.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Trace: individual.net b/mUwLHP92PbwRVPQuFxaQVRaZm293FmPMEcNYfddfvIvRODtP X-Orig-Path: Telcontar.valinor!not-for-mail Cancel-Lock: sha1:gL2oWvQtfy78VUPV8xASSWo/6bs= sha256:16k9hHJEW3yoHUDXMUdMbf95eoBn+4RkpJFjENGY87Y= User-Agent: Mozilla Thunderbird Content-Language: es-ES, en-CA In-Reply-To: Bytes: 3166 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. -- Cheers, Carlos.