'Strong signal' from sun-like star sparks alien speculation

Click For Summary

Discussion Overview

The discussion revolves around a recently detected radio signal from the sun-like star HD 164595, which has sparked speculation about its potential artificial origin and implications for extraterrestrial intelligence. Participants explore various hypotheses regarding the signal's source, its frequency, and the likelihood of it being a message from an alien civilization.

Discussion Character

  • Exploratory
  • Debate/contested
  • Technical explanation

Main Points Raised

  • Some participants suggest that the signal could be artificial, indicating advanced capabilities beyond humanity, while others express skepticism about this interpretation.
  • There are claims that the signal's frequency of 11 GHz is suspiciously close to man-made radar frequencies, raising the possibility that it could be a reflection or interference from terrestrial sources.
  • One participant mentions that the signal's origin is uncertain, as it is described as coming from the vicinity of the star, which complicates the identification of its source.
  • Some argue that for an alien civilization to send a signal directed at Earth, they would need to be aware of our existence, which seems unlikely given the distance of 94 light years.
  • There are differing opinions on what constitutes a "strong candidate" for an artificial signal, with some questioning the criteria used to label it as such.
  • Participants discuss the historical context of similar signals, such as the WOW! signal, and the potential for misinterpretation of signals due to human technological noise.
  • Speculation arises about the nature of advanced civilizations and their communication methods, including the possibility of them using different time scales or frequencies.

Areas of Agreement / Disagreement

Participants do not reach a consensus, as multiple competing views remain regarding the signal's origin, its implications, and the likelihood of it being a message from extraterrestrial intelligence.

Contextual Notes

Participants note limitations in the current understanding of the signal, including the lack of precise frequency data and the potential for human-made interference. The discussion reflects a range of assumptions about the capabilities and awareness of hypothetical alien civilizations.

Who May Find This Useful

Readers interested in the search for extraterrestrial intelligence, radio astronomy, and the implications of anomalous signals in astrophysics may find this discussion relevant.

  • #31
The signals we've emitted...
How much degradation would occur as the signal ripples in all directions away from us...wouldn't the amount reaching a single destination be miniscule?
 
Astronomy news on Phys.org
  • #32
Chuck Keranen said:
The signals we've emitted...
How much degradation would occur as the signal ripples in all directions away from us...wouldn't the amount reaching a single destination be miniscule?
Broadcasted radio signals emitted from Earth would indeed become lost among cosmic general background radio noise very quickly.
I doubt that using our best technology presently available we could even detect a radio broadcast occurring on a hypothetical planet orbiting the Alpha Centuri system, our nearest stellar neighborhood.
An intentionally focused transmission would work a lot better if someone decided to do that.
 
  • #33
rootone said:
Broadcasted radio signals emitted from Earth would indeed become lost among cosmic general background radio noise very quickly.
I doubt that using our best technology presently available we could even detect a radio broadcast occurring on a hypothetical planet orbiting the Alpha Centuri system, our nearest stellar neighborhood.
An intentionally focused transmission would work a lot better if someone decided to do that.
Agreed. Sending us a focused beam might only make sense if "They" thought we could make sense of it, or they are here already communicating, which would probably require more than one signal...not likely.
 

Similar threads

  • · Replies 0 ·
Replies
0
Views
3K
  • · Replies 10 ·
Replies
10
Views
11K
  • · Replies 15 ·
Replies
15
Views
6K
  • · Replies 44 ·
2
Replies
44
Views
15K