- Tech Explorist
VIVA – Recently, a new study have revealed that aliens do not want to visit Earth because the sun is considered boring. This study also becomes denial of the Fermi Paradox, which tries to present the reason that other civilizations live outside our solar system, as quoted from the Sciencealert website, Thursday, October 27, 2022.
On the assumption of the Fermi Paradox, scientists struggle to provide reasons why we have not been able to gather evidence for this.
Through this study, the researchers targeted the Fermi Paradox by focusing on the types of stars and stated that not all types of stars are attractive for expansion by technological civilization.
This is written in the journal entitled Galactic Settlement of low-mass Stars as a Resolution to the Fermi Paradox" published in the Astrophysical Journal.
In the study, the authors rejected the assumption of the Fermi Paradox, which suggests that the stars as a whole are attracted to space travelers.
Ilustrasi alien.
- Dok. Istimewa
Relying on the hypothesis by Hansen & Zuckerman (2021) that developing civilizations prefer to settle in low-mass K- or M-dwarf systems instead of avoiding high-mass stars to maximize their longevity in the galaxy.
The researchers also calculated a new estimate for the time it would take for a galactic civilization to colonize a galaxy. If they were to target K- and M-, it is estimated that it would take up to two billion years for a galaxy to reach all its low-mass stars.
With greater travel capabilities, civilizations could dramatically reduce the span of two billion years. Faster expansion can occur in 2 Myr, with a travel requirement of around 10 ly to complete all M-dwarves and about 50 ly to complete all K-dwarves.
This estimate is based on civilizations spreading through the galaxy in waves. There will be a period in which civilization will wait for the close approach of an auspicious star.
The authors make the case that civilizations could take advantage of close stellar encounters to rapidly expand across galaxies without the need for relativistic spaceflight.
In particular, we note that the low-mass Galactic Club, originating from the G-dwarf parent system, would have had plenty of time to develop in galactic history without us noticing its activity.
But we don't know much more about whether the such galactic-scale expansion will be common or desirable for technological civilization in general.
