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Old 09-10-2019, 04:05 PM
 
Location: Seattle
1,602 posts, read 339,220 times
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The duration is a fraction of a second, so a natural cause would have to be very compact, like a neutron star.
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Old 09-11-2019, 12:00 AM
 
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Originally Posted by RocketDawg View Post
Well, not really. They were just passing along information ... it wasn't meant to be precautionary (at least in my opinion).

If a signal left earth right now, it would be 6 billion years from now when whoever received the signal would have time to digest it, return an answer, and us to receive it. I doubt the sun (and thus the earth) lasts that long.

We've only been broadcasting radio signals for something over 100 years, so if you're worried about whoever's 3 billion light years away, there's no need to.

Actually, there's no need to worry at all. Even the closest star with planets is many light years away.
These things we refer to as 'UFOs and alien beings', do not live 3 billion light years away, I believe they originate a lot closer to home.
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Old 09-11-2019, 03:52 AM
 
Location: Swiftwater, PA
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Originally Posted by rstevens62 View Post
These things we refer to as 'UFOs and alien beings', do not live 3 billion light years away, I believe they originate a lot closer to home.

Anything is possible when you really look at the size and age of the universe. If we were all like ants and had a 'hive mind' to survive; it would be hard to say what we could accomplish. Pretending that we would survive another 4.5 billion years; we would be facing the collision of the Andromeda Galaxy. Knowing an imminent danger is approaching, a species that works together, would formulate a plan to escape (the will to survive). An advanced civilization might be able to hollow out a moon or asteroid and house/transport the bulk of its inhabitants until it can reach a new safe haven. It might even be possible that other civilizations did something like that billions of years ago.

But that is why space is so interesting. There is almost no limit to the possibilities. While I question most of threads on this particular forum; I am always open to proof. I have never said that I, or anybody else, have all the answers.
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Old 09-12-2019, 08:09 AM
 
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Originally Posted by rstevens62 View Post
I just hope they are being cautious about broadcasting too much information about ourselves or our location to deep corners of the galaxy (where we have no clue what kind of technology may be in use).
The Three Body Problem comes to mind.

Ye discovers the possibility of amplifying outgoing radio waves by bouncing them off the sun and sends an interstellar message. Eight years later, by now in a loveless marriage with Yang, Ye receives a message from a concerned alien pacifist from the planet Trisolaris, warning her not to respond or else the inhabitants of Trisolaris will locate and invade Earth. The alien proceeds to describe Trisolaris's environmental conditions and societal history. Ye, who has come to despise humankind, responds anyway, inviting them to come to Earth to settle its problems.
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Old 09-12-2019, 09:05 AM
 
Location: Greenville, SC
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Originally Posted by 1insider View Post
The Three Body Problem comes to mind.
I had the same thought when I read rstevens' comment.
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Old 09-12-2019, 09:31 AM
 
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Here's a look at how far the oldest radio waves at the speed of light have traveled from the Earth. It's barely a blip in the Milky Way galaxy (our galaxy is about 100,000 to 200,000 light years across), much less locations that are 3 billion light years away. Click the image to enlarge it. Then click it again (by the blue dot) to enlarge it even more. That's how far our oldest radio waves have traveled.
Extent of human radio broadcasts | The Planetary Society

Any potential intelligent alien civilization capable of picking up those broadcast waves would have to be within that range to detect our signals. Chances are those signals would be so weak, that it would be extremely difficult, in not impossible to distinguish them from the noise from the rest of the galaxy. The source of the 3 billion year old noise to be detected by us now would have to be a profoundly powerful source, such as pairs of colliding black holes or neutron stars, not an alien transmitting a radio broadcast.
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Old 09-12-2019, 02:16 PM
 
Location: Swiftwater, PA
14,684 posts, read 11,979,822 times
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Originally Posted by NightBazaar View Post
Here's a look at how far the oldest radio waves at the speed of light have traveled from the Earth. It's barely a blip in the Milky Way galaxy (our galaxy is about 100,000 to 200,000 light years across), much less locations that are 3 billion light years away. Click the image to enlarge it. Then click it again (by the blue dot) to enlarge it even more. That's how far our oldest radio waves have traveled.
Extent of human radio broadcasts | The Planetary Society

Any potential intelligent alien civilization capable of picking up those broadcast waves would have to be within that range to detect our signals. Chances are those signals would be so weak, that it would be extremely difficult, in not impossible to distinguish them from the noise from the rest of the galaxy. The source of the 3 billion year old noise to be detected by us now would have to be a profoundly powerful source, such as pairs of colliding black holes or neutron stars, not an alien transmitting a radio broadcast.
Here is a link to stars within 250 light years of earth: The Universe within 250 Light Years - The Solar Neighbourhood. There are some and that would mean that there is a possibility of life in that little 200 light year blip. That said it might take us another 50 or 100 years to hear back from any intelligent life form; if any do exist in our little blip.
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Old 09-12-2019, 04:19 PM
 
Location: Greenville, SC
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Originally Posted by fisheye View Post
Here is a link to stars within 250 light years of earth: The Universe within 250 Light Years - The Solar Neighbourhood. There are some and that would mean that there is a possibility of life in that little 200 light year blip. That said it might take us another 50 or 100 years to hear back from any intelligent life form; if any do exist in our little blip.
What fraction of the 260,000 stars within 250 light years are old enough and stable enough to provide a Goldilocks zone where life could evolve? How many of that fraction contain worlds within their Goldilocks zones that support life? How many of those have progressed to multicellular life? How many of those have complex intelligent beings with technology surpassing our own?

Sobering facts: There was no life on Earth for the first billion years; and the Earth was 2.7 billion years old before multicellular life appeared; hominids have been on the planet for about 2 million years, and we developed space flight a few decades ago. If this applies to other planets, it's likely very few of those 260,000 stars host intelligent life that's beyond a stone age level. We may very well be the only technological civilization in our area of the galaxy.
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Old 09-12-2019, 10:37 PM
 
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Too many people on here are trying to use human understandings, limitations and what we think is most probable, like the above post talking about light years and how distance plays such a big role...well, like Ive said before, what if we cannot even define 'where' they come from, what if its nothing like any of us have speculated, maybe its similar to another dimension, maybe its totally different, etc etc.


Its hard to explain what Im really talking about, but a good example is that movie 'Midnight special', it was about a young boy who was special and they came to find out, he was from some 'city' that existed righ here on earth, but it was not exactly on the same 'plane'.


I really think thats where these 'aliens/UAPs' are coming from, they have always been here, right among us, but we are not aware of them or their cities.
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Old 09-12-2019, 10:44 PM
 
2,890 posts, read 4,295,003 times
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Originally Posted by fisheye View Post
The Chinese now have a large telescope that is picking up mysterious signals from outer space: China's giant telescope picks up mysterious signals from deep space - Xinhua | English.news.cn. According to that link: "From late August to the beginning of September, more than 100 bursts were detected from FRB121102, the highest number of bursts ever detected so far." They also go on to say that the source of the radio waves is: "about 3 billion light years from Earth". So do not think that we will get any first hand information about the source of the signals anytime soon.

Interesting but unfortunately I don't believe anything the Chinese government says.
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