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The star systems that could be watching Earth from space


Eldorado
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If there were alien civilizations in other star systems, would they be able to detect our presence here on Earth? This is a question that could lead us to new ways to search for signs of extraterrestrial intelligence, but not one that is necessarily easy to answer.

Nevertheless, a team of astronomers has identified 2,034 star systems within 100 parsecs (326 light-years) of Earth that would have the right vantage point to detect Earth life signs as our home planet orbits the Sun.

"From the exoplanets' point of view, we are the aliens," said astronomer Lisa Kaltenegger of Cornell University's Carl Sagan Institute.

Full article at Science Alert

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I have to think these aliens have a lot more intelligence and technology than these scientists give them credit for.

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12 minutes ago, papageorge1 said:

have to think these aliens have a lot more intelligence and technology than these scientists give them credit for.

Hi papa.  The aliens may indeed.  All scientists can do is establish a minimum based on what we know or can do.  So there are 2000+ systems with  a good vantage point, whether there is anybody capable of watching in any of those systems would just be a guess.

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3 minutes ago, Tatetopa said:

Hi papa.  The aliens may indeed.  All scientists can do is establish a minimum based on what we know or can do.  So there are 2000+ systems with  a good vantage point, whether there is anybody capable of watching in any of those systems would just be a guess.

I get that. The minimalist thinking just sounds a little slow to people that believe aliens are already here and interacting with earth and humans from the beginning.

Also I have to guess that a 'not good vantage point' from our understanding is not likely an issue for more technologically advanced alien societies.

That was all.

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9 minutes ago, papageorge1 said:

That was all.

Hi papa no worries, I just think 2000 is a sobering number and should cause some people to think about the possibility a little more.

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3 minutes ago, Tatetopa said:

Hi papa no worries, I just think 2000 is a sobering number and should cause some people to think about the possibility a little more.

Musing a bit. When I understand the complexity of life forming on earth from the minimalist scientific viewpoint, 2000 more chances would still seem trivial to impossible for life to form. It seems like physical life could never have happened a first time let alone in any number of repeat tries. 

(I am one that thinks life was fostered by intelligence above the physical level and that that intelligence exists throughout the universe and each place does not need to invent life from non-life from scratch.)

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2 hours ago, papageorge1 said:

I have to think these aliens have a lot more intelligence and technology than these scientists give them credit for.

Papa, I think your right they certainly could be far beyond our level of technology and intelligence. The Universe is approximately 13.4 Billion years old. Our Solar System and earth are approximately 4.5 Billion years old, in addition the first life appeared upon Earth approximately 3.8 Billion years ago. Simiply look at the difference in the amount of time from Universal Creation to the first known life on Earth. There is a Hugh span of time that separates the two, so there is a good possibility that another species could be 1 or 2 Billion years older than us, which would also give them the means to be much more advanced technologically and also at a level of intelligence beyond anything we could imagine. 

My point in all of this is simple, if they did not wish to allow us to know they exist we would not know. Also, to address your question above, not all theoretical physicists believe that Alien Species in Universe are equal to or less intelligent than we are. Professor Hawking certainly was one of the greatest theoretical / astrophysicist of our time and he would not agree with with conclusion and neither would many of the other top scientists in those fields of study today. 

Take Care Papa, :tu:

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2 hours ago, Tatetopa said:

Hi papa.  The aliens may indeed.  All scientists can do is establish a minimum based on what we know or can do.  So there are 2000+ systems with  a good vantage point, whether there is anybody capable of watching in any of those systems would just be a guess.

Hey Tate and Papa while the stated 2000+ systems is interesting it's really immaterial in retrospect. There are new scientific studies being conducted that have produced theories that Space faring Alien Species could have passed through our Solar System when we were nothing but the first Creatures beginning to crawl from our Oceans to the land. Theoretically they could have left artifacts behind to measure the development of Solar Systems like ours, so expanding this line of thought is it possible that their are Probes in our Solar System. 

Here is a Acedemic Paper from Harvard University that discusses this subject and expands upon it.

Searching for Extraterrestrial Technologies Within Our Solar System http://adsabs.harvard.edu/full/2004IAUS..213..487T

I am not saying any of this is a fact, only that the possibility exists.

Peace Tate and Papa

1 hour ago, papageorge1 said:

Musing a bit. When I understand the complexity of life forming on earth from the minimalist scientific viewpoint, 2000 more chances would still seem trivial to impossible for life to form. It seems like physical life could never have happened a first time let alone in any number of repeat tries. 

(I am one that thinks life was fostered by intelligence above the physical level and that that intelligence exists throughout the universe and each place does not need to invent life from non-life from scratch.)

 

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Pretending there is an alien civilization out there that has my sensibilities (doubtful of course) and the desire to explore, I would send out multitudes of small AI craft in all directions. Maybe a flotilla of them targeted at every star with planets.  When they reached their destination thousands of years later, they could observe and direct  information back home. 

We may never be visited by a living organic technological advanced alien, just their machines.  Ands no guarantees that their home civilization is still alive and interested, 

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The 2nd important question is: is our star listed in any star map that isnt of human origin?

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Aliens are smart enough not to mess with us, Earthlings. We're quite an aggressive and invasive species, as well as deadly psychics.

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