More recently, it would have seemed surprising that astronomers could observe planets near stars hundreds of light-years from our system with telescopes. But this is true, in which space telescopes launched into orbit have greatly helped. In particular, the Kepler mission, which has collected a base of thousands of exoplanets over a decade of work. These archives are still to be studied and studied, and new approaches to analysis make interesting discoveries.
For example, in a recent article in the publication a team of scientists from Washington State University announced the selection of 24 exoplanets, the conditions of life on which may be more favorable than on Earth. Exoplanets selected from the base of the mission of the Kepler orbiting telescope, which were discovered by the so-called , when the planet is detected while passing through the disk of the native star.
But before looking for extraterrestrial "paradise", scientists have formed the criteria by which a new selection was made. So, in addition to searching for exoplanets in the habitable zone of stars, where liquid water could stay on a rocky planet and not freeze or boil away, several new ones were added to the search factors. First, it is proposed to look for exoplanets in systems of stars slightly smaller than the Sun, which belong to (The sun belongs to class G). Slightly less hot K-type dwarfs live up to 70 billion years, while G-type stars do not differ in longevity and live for about 10 billion years. A path 70 billion long can clearly give the development of life more chances than a path seven times shorter.
Second, a slightly larger exoplanet than Earth, say 10% larger, would provide more area for life. Thirdly, a more massive exoplanet, one and a half times larger than the Earth, could hold an atmosphere longer and, due to a more active and larger core, would keep heat longer. The same applies to the electromagnetic field, which is believed to be largely due to the nucleus. Fourth, if the average annual temperature on the exoplanet is 5 Β°C higher than on Earth, this would also have a positive impact on biodiversity.
In general, none of the 24 exoplanet candidates for the role of a βparadiseβ can boast of the whole complex of factors conducive to the violence of life, but one of them satisfies four criteria at the same time. Thus, scientists have chosen a target for a closer study of candidates for alien life. And scientific forces and means are not infinite. You can't do it without a goal.
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Source: 3dnews.ru