Astronomers explain where you can find intelligent life in our galaxy

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    Astrophysicists from Serbia, France and Austria, after analyzing the evolution of stars and galaxies and applying computer simulations, came to the conclusion that any practical search for extraterrestrial civilizations should be made on the periphery of the galactic disk and in star systems younger than ours.

    According to scientists, a planet with a successfully developed life should be at a sufficiently large distance from the region of the galaxy, in which active star formation occurs. A supernova explosion or a collision of stars can lead to a disruption of the orbit of the planet, which simply freezes as the distance from the star increases. And the radiation of supernovae can erase life from the face of the planet at a distance of more than 3000 light years.

    In addition, based on the experience of the development of life on earth, the planets on which intelligent life develops should provide diversity in the environment. And the presence of stony planets, such as Earth, is provided in metal-rich systems. Only relatively young stars (up to 3 billion years old) can find a large amount of metals left over from previous generations. Old stars and planetary systems developed in the conditions of metal deficiency. In addition, scientists note that the orbit of a habitable planet should be as close as possible to a circular one.

    According to the results of computer simulation, scientists concluded that less than 1% of systems where life can develop are located closer than 10 kpc to the center of the galaxy (our Solar system is 8.5 kpc from the center of the Milky Way). The systems whose age is 3 billion years and the distance from the center of the galaxy is approximately 16 kpc are much higher.

    The simulation was performed using free Gadget-2 software designed for cosmological N-body / SPH simulations on parallelized supercomputer systems with distributed memory.

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