Humans live alone in the universe?

While we are still waiting for signals from aliens, a Harvard astronomer (USA) has concluded that extraterrestrial life does not exist and that we live 'lonely. 'in the vast universe.

Until now, scientists have discovered more than 500 planets similar to our Earth and even astronomers believe that billions of such planets have not been discovered.

However, Dr. Howard Smith, an astrophysicist at Harvard University, said that the surface temperature of our planet-like planets is too harsh, life cannot exist . Causes by structure The solar system of these planets is completely different from our solar system.

' We have found that many planets have a distance to their Sun's center similar to the distance from our Earth to the Sun. But the solar system of perfect acts is different from our solar system. The harsh environment on these planets is not suitable for life , 'Dr Howard Smith told the Daily Mail.

The hopes of finding a living planet similar to Earth outside the Solar System make Dr. Howard Smith skeptical that we live 'lonely' in the vast universe. Even if there are life-like acts like Earth, we can hardly contact them.

Last month, well-known scientist Stephen Hawking claimed that billions of galaxies exist in the universe. The well-known British scientist also affirmed that there are certainly living planets in billions of these galaxies.