Scientists prediction comes true and 234 sun like stars might be emitting extraterrestrial signals.

In 2012 Ermanno F. Borra published a paper proposing that searches for extraterrestrial intelligence (SETI) could analyze standard astronomical spectra for signals. Borra suggested that ETI might use light pulses separated by constant time intervals to create detectable periodic signals in spectra. This method would be simple and could be applied to existing data using Fourier transform software. The hypothesis was speculative but grounded in basic physics, suggesting that Earth’s current technology could send detectable signals up to 1000 light years away.

Four years later, in 2016 Borra along with Eric Trottier reported the discovery of peculiar periodic spectral modulations in a small fraction of solar-type stars ⭐️. Analyzing 2.5 million spectra from the Sloan Digital Sky Survey they found signals in 234 stars primarily within the F2 to K1 spectral range. These signals matched the shape of an ETI signal Borra had previously predicted. While other explanations like unusual chemical compositions in stars were considered the ETI hypothesis was consistent with the findings. However, the authors noted that further work was needed to confirm this hypothesis.

The 2012 paper laid the groundwork for the 2016 discovery. Borra’s initial idea that ETI could use light pulses to signal their existence was a precursor to the actual detection of such modulations. The 2016 findings provided potential empirical evidence for Borra’s earlier theoretical predictions, sparking significant interest and debate in the scientific community about the possibility of extraterrestrial communication signals.

The spectral modulations were considered special because they matched the expected signatures of an intelligent extraterrestrial signal as previously predicted by Borra in his 2012 paper. The hypothesis was that an advanced civilization might use laser pulses to communicate which would leave distinct signatures in the form of periodic spectral modulations detectable in the light of their host stars. Ty hese modulations were characterized by very precise and tiny spacings between the spectral lines suggesting an artificial origin as natural processes are unlikely to produce such regular and narrowband signals. So what do you think? Aliens or do you have another theory? Why do these stars behave like this?

https://www.businessinsider.com/seti-alien-signals-2016-10

https://youtu.be/GmKrqKr6kOA?si=LXUWMTrv2zHXQ56u

https://www.yahoo.com/news/mysterious-star-pulses-may-alien-113000898.html

https://arxiv.org/abs/1610.03031

https://arxiv.org/pdf/1210.5986.pdf