Choose the "miles" five stars may nurture life

Astronomers choose "miles."

Housed in the hound the star called BETACVn, 26 light-years from the Earth. Publish the list of the Carnegie Institute of astronomer Margaret Turnbull · believes that it has an advanced civilization in the vicinity of planets essential precondition for the evolution of all.

Dr Turnbull from 17129 Star list were elected one of the five most likely breed alien stars. The thousands of stars were astronomer carefully filtered "to live in the Galaxy," will not be extreme physical conditions to limit intellectual life and its technology evolution and development.

Radio telescope alignment targets

Turnbull said that she is completely under the stars themselves make their choice of properties. The first of their choice on the basis that the star must have at least 30 billion-year history, this is life on Earth evolved to its current stage of the time. Turnbull's view, such a long period of time sufficient to allow the planet to formation, to the development of complex life.

In the list of stellar quality should not be greater than the Sun 1.5 times too big stars often short life, is not sufficient to form a habitable zone. In addition, these stars must in the atmosphere have enough iron, at least Sun iron content of 50%, otherwise, it will not be formed around the Earth like planets.

These stars also must be in its stellar evolution of appropriate phase, which rules out red star and dwarf. Turnbull said: "we intend to favour those with similar star Sun. If God gave the Earth to another Galaxy, the Galaxy will be willing to place to live. ”

"Search for extraterrestrial intelligence Foundation," Jill · Letarte said that her organization now will put the radio telescope at this 5 star. Tower's Foundation is a private sponsor of the Organization, it has been trying to detect from other civilizations of non-natural radio signals.

Two lists of reference

Turnbull also elected the most likely to have a rocky worlds of stars, because it has liquid water on the planet, simple life to multiply. -First is located in the Indian city of the stars EpsilonIndiA distance Earth about 11.8 light-years, the brightness is only one-tenth of the Sun.

Turnbull said that the two can live list is intended for use only by other Galaxy astronomers refer, is by no means the end of the list. "In how to understand these stars, sure there are still some uncertainties. If you let me from selected 100 stars, I would be hard to say which one is best. ”

But there are always some cannot exclude the evolution of life, and through the work of the search for aliens in the best candidate stars, scientists may get some results, although no one knows if it detects that the radio signals from alien to us what to do. Turnbull said: "there is no such policy, tell us where you found the alien should do. ”