UFOs have been spotted more than once in different countries and cities. Although the existence of aliens is not known for certain, scientists are considering versions that aliens from other planets can pose a threat to the Earth and humanity.
At the same time, American researchers found out whether the aliens really need our planet.
They believe that UFOs are unlikely to ever land on Earth. And the reason is that aliens are looking for specific types of stars. And the star of our galaxy, the Sun, simply does not fit them by these criteria.
Jacob Hakk-Missra and Thomas Fauchez of the Blue Marble Space Science Institute and American University say that since all the stars in the galaxy are different, we can assume that other space civilizations choose where they would like to live.
Civilizations are more likely to choose low-mass dwarf star systems K and M to maximize their lifespan in the galaxy, experts say.
K- and M-dwarfs are stars that live longer than yellow dwarfs, like our Sun. In addition, trying to capture the solar system requires a large amount of resources.
No matter how advanced a civilization is, it will not waste its resources on a star that goes out relatively early, even if it happens after a few million years.