Scientists are not giving up hope. Despite years of unsuccessful research, they do not give up on the idea of finding an alien life form. However, this mission is not the easiest. Given the vastness of the Universe, the possibilities are endless. To be more effective, researchers must therefore determine the places that are most likely to host extraterrestrial life. Thus, they will be able to reduce their search areas.
This is what researchers at Villanova University in the United States are doing. Until now, most experts believed that one should look for life forms on the star side similar to the Sun. Indeed, their habitable zone would offer the conditions conducive to the appearance of extraterrestrial life. Researchers at Villanova University are not of the same opinion.
Instead, they say the focus should be on the orange K-type stars that have what scientists call the "Goldilocks Zone." "
Stars that offer better conditions than the Sun?
For ordinary people, a star remains a star. However, the scientific community has classified them in different categories. Stars resembling the Sun, for example, fall into the type G category. They are yellow dwarfs with a lifespan of 10 billion years.
K-type stars, on the other hand, are orange dwarfs, which can live between 15 and 40 billion years. Researchers are interested in these orange dwarfs for a very specific reason: their "Goldilocks zone." This is the habitable zone of the stars. According to scientists, the Goldilocks zone of K-type stars offers better conditions for the appearance of life than the Sun, because they are said to be brighter and warmer.
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Orange dwarfs that exist in abundance
If the hypothesis of these researchers is true, then it should not be long before we find planets harboring extraterrestrial life forms. Indeed, according to scientist Edward Guinan, from Villanova University, these orange dwarfs are more numerous and therefore easier to find than those of type G.
“If you are looking for habitable planets, the abundance of these types of stars maximizes your chances of finding life,” he said.
Oliviez Hernandez, director of the Rio Tinto Alcan Planetarium in Montreal added that “with the very large number of K-class stars, we greatly increase the probabilities of finding exoplanets around these stars. "
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The results of this study were presented at the 235th meeting of the American Astronomical Society, in Hawaii.