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NNTP-Posting-Date: Sat, 29 Jun 2024 20:16:38 +0000
From: john larkin <jlarkin_highland_tech>
Newsgroups: sci.electronics.design
Subject: Re: Expedition to Europa
Date: Sat, 29 Jun 2024 13:16:38 -0700
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On Sat, 29 Jun 2024 20:45:27 +0200, "Carlos E.R."
<robin_listas@es.invalid> wrote:

>On 2024-06-29 17:35, Joe Gwinn wrote:
>> On Sat, 29 Jun 2024 04:04:11 -0700, Don Y
>> <blockedofcourse@foo.invalid> 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.
>>>>>>
>>>>>> .<https://europa.nasa.gov/mission/about/>
>>>>>>
>>>>>> 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.