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Is there anybody hiding there in the dark?

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Is there anybody hiding there in the dark?

Old 14th Jan 2019, 00:16
  #41 (permalink)  
 
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When a signal indicating alien intelligence arrives on Earth after travelling for a billion years, the intelligence that sent it would already be extinct.

And when we send a signal back saying, "Do drop in for some tea and bickies" we will also be extinct before it arrives.

Until we develop hyperdrive instantaneous travel. Then the fun begins. See a star like it is NOW, not millions of years ago.

Last edited by Ascend Charlie; 14th Jan 2019 at 01:59.
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Old 15th Jan 2019, 03:30
  #42 (permalink)  
 
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Regardless of the constraints of time and space, why in heaven's name (sorry...) do we suppose that intelligence equates to the desire -- or even the ability -- to transmit electromagnetically based signals to other worlds?
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Old 15th Jan 2019, 09:43
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When it comes to scale, the universe could contain extremely super low and extremely super high frequencies that we are not able to detect let alone comprehend. Same goes for how aliens are often represented as being the same procreate-able size as humans, they could be giants moving to a different timescale.
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Old 15th Jan 2019, 12:37
  #44 (permalink)  
 
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Originally Posted by Sam Asama View Post
Regardless of the constraints of time and space, why in heaven's name (sorry...) do we suppose that intelligence equates to the desire -- or even the ability -- to transmit electromagnetically based signals to other worlds?
Because we've done it. Wherever you might be on the we're a great/terrible species thing, we are the only example we can reference. A key characteristic of ours is a quest for knowledge, a desire to explore & discover. We therefore assume others would possess the same qualities.
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Old 15th Jan 2019, 13:21
  #45 (permalink)  
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Originally Posted by Parapunter View Post
Because we've done it. Wherever you might be on the we're a great/terrible species thing, we are the only example we can reference. A key characteristic of ours is a quest for knowledge, a desire to explore & discover. We therefore assume others would possess the same qualities.
Homo Sapiens developed electromagnetic radiation as their means of communication.

Other species of hominids might develop other means of communication, and 'radio' might remain undiscovered within their 'world'.

They probably don't speak English, anyway . . .
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Old 15th Jan 2019, 13:50
  #46 (permalink)  
 
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I was answering on the desire to reach out rather than the means per se... I'm aware of the we're not listening properly theory. Another strand of that is the reach & decay of signals. I gather the totality of radio & TV broadcasts from Earth reach about 0.3 light years into the cosmos before becoming undetectable, if that Wiki I read is anything to go by.
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Old 15th Jan 2019, 14:59
  #47 (permalink)  
 
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Originally Posted by Sam Asama View Post
Regardless of the constraints of time and space, why in heaven's name (sorry...) do we suppose that intelligence equates to the desire -- or even the ability -- to transmit electromagnetically based signals to other worlds?
We don't. But it is perfectly reasonable to assume that a so called intelligent species would look up at the night sky and wonder what else might be out there.

There may well be huge variables but intelligence infers communications. There could be means of communication other than electro magnetic waves but it is most likely the simplest.

They would either be less advanced than we are or more advanced but the laws of physics will still apply and therefore space travel would be limited to fractions of the speed of light. EM waves travel at the speed of light.
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Old 15th Jan 2019, 15:38
  #48 (permalink)  
 
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Question

Originally Posted by Buster15 View Post

There may well be huge variables but intelligence infers communications. There could be means of communication other than electro magnetic waves but it is most likely the simplest..
How about something inconceivable to us? Some form of communication even beyond telepathy? The invisible touch?
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Old 15th Jan 2019, 15:50
  #49 (permalink)  
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Be cognisant that Radio has only been known on Earth in the last 250 years - with many millions before its discovery.

And practical means of radio communication just over 100 years.
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Old 15th Jan 2019, 15:51
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Here's a more advanced civilisation than the human race.

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Old 15th Jan 2019, 16:29
  #51 (permalink)  
 
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The answers to all the above worthy questions are there for all to see. Watch various channels on Freeview (here in UK) and there seems to be no end of "Ancient Aliens" and various other UFO/Alien related tripe.
I remember as a kid, I used to think a lot about "what is out there?" and it caused me great difficulty sleeping as I lay there trying to imagine it. (I am talking about 6 or 7 years old here!). The scenario that kept going through my head was a huge brick wall marking the edge of the universe. The bit that stopped me getting to sleep was the idea of getting a huge ladder to peek over the brick wall and seeing, in the distance, another brick wall!
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Old 15th Jan 2019, 16:43
  #52 (permalink)  
 
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Originally Posted by KelvinD View Post
The answers to all the above worthy questions are there for all to see. Watch various channels on Freeview (here in UK) and there seems to be no end of "Ancient Aliens" and various other UFO/Alien related tripe.
I remember as a kid, I used to think a lot about "what is out there?" and it caused me great difficulty sleeping as I lay there trying to imagine it. (I am talking about 6 or 7 years old here!). The scenario that kept going through my head was a huge brick wall marking the edge of the universe. The bit that stopped me getting to sleep was the idea of getting a huge ladder to peek over the brick wall and seeing, in the distance, another brick wall!
Like you my friend, I used to wonder what the Universe was expanding into.
Conceptually I couldn't comprehend that the Universe grew from nothing and now it is thought that it may well have been preceeded by another form.
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Old 15th Jan 2019, 16:56
  #53 (permalink)  
 
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As a kid, I too pondered on these things and thought is time and space finite or infinite. Finite is a human concept where everything can be measured, has a beginning and end. I've come to the conclusion that time and space are infinite. Mind boggling really.
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Old 15th Jan 2019, 21:45
  #54 (permalink)  
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Originally Posted by Buster15 View Post
We don't. But it is perfectly reasonable to assume that a so called intelligent species would look up at the night sky and wonder what else might be out there..
Hmmm.. not at all sure about that. It's arguably more reasonable to assume that it's not possible for whatever intelligent or sentient life form exists on Planet Zkeidlsx to see or otherwise percieve the "night sky". Perhaps the atmosphere isn't conducive. Perhaps it's an "aquasphere". Perhaps those life forms don't percieve light via "eyes".

Last edited by grizzled; 16th Jan 2019 at 17:42.
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Old 9th Feb 2019, 20:31
  #55 (permalink)  
 
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A new article by an astrophysicist, arguing for the importance of looking...

https://www.theglobeandmail.com/opin...ng-alien-life/
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Old 9th Feb 2019, 20:48
  #56 (permalink)  

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Is there anybody hiding there in the dark?

There could be. The street lights round here haven't been working for months now.
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