Jacob Haqq-Misra and Thomas J. Fauchez believe that extraterrestrial civilizations would seek to expand by K- or M-type dwarf stars.
Enrico Fermi is the author of aand that tries to explain why no has made contact with us earthlings. The illusion of knowing if there is another intelligent race has been the result of studies and stories since ancient times, but so far we have no indication that we are together in the universe. The reason, according to a new study, is very clear: the problem is our Sun.
Using the Drake equation as a basis , Jacob Haqq-Misra and Thomas J. Fauchez are the authors of thisthat was published in The Astronomical Journal. The same part from the assumption that technologically advanced civilizations travel from one star to another in search of expansion or survival of their race. But on that journey there may be the possibility that there are solar systems that simply are not attractive to them.
It should be noted that the Drake equation is an attempt to calculate the number of civilizations that could exist in our galaxy based on the rate of star formation, how many of those stars host planets around them, and how many of those planets could be in one zone. habitable.
Getty ImagesIt then estimates how many of those habitable planets could support life and how many of those life forms could develop advanced technology to show their presence in other parts of the Universe.
Jacob Haqq-Misra and Thomas J. Fauchez believe that these civilizations would seek to expand by type K or M dwarf stars , since they are much longer- lived stars , something that the Drake equation omits in its formula.
Our Sun is a star of spectral type G2 and luminosity V. For its part, type K stars are orange dwarfs and type M are red dwarfs. Both types have the characteristic that they are less luminous than our Sun, but they can still be habitable. And there is something important: they are stars that last much longer in their main sequence and are more stable than our Sun.
Our Sun is 4.6 billion years old and its main sequence will still last another 10 billion years , according to expert calculations. However, it is estimated that in a few billion years its expansion will begin and with itas we know it on Earth.
In contrast, K-type stars remain stable for periods of between 25 and 80 billion years. This would make any civilization looking for a place to live long-term choose these systems over our galaxy.
“But we don’t know much more about whether or not such galactic-scale expansion would be usual or desirable for technological civilizations in general,” the authors of this new study write.