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A ‘potentially habitable’ exoplanet, that has a similar to Earth, was found by American astronomists of California university from Santa Cruz, according to a study released in Astrophysical Journal.

This exoplanet, named Gliese 581g, has a temperature that allows the existance of fluid water above the soil or very near to him.

What is definitely an exoplanet you might wonder…An exoplanet is mostly a earth that spins around a star – other than sunshine – from our photo voltaic system.

If this discovery will be confirmed by other measurements, Gliese 581g will be the exoplanet that will be the most similar to Earth, from all exoplanets found so far. It is also, the first exoplanet that exists in an area of room that can be habitated.

The star around which Gliese 581 spins is in our galaxy at a range of 20 lighting many years from Earth ( lighting year equals 9.460 billion kilometres).

Gliese 581g seems to have a similar gravity as well. The earth spins around her star on an orbit that is accomplished in 36,6 days.

For astronomers, an exoplanet is ‘potentially habitable’ when it allows the existance of life. But this thing doesn’t required signify that men and women can live comfortable and safely on this planet.

The potential of the earth to get habitable depends of several facts, and from these, probably the most important would be the presence of fluid water as well as the existence of an atmosphere.

According to first estimations, the temperature recorded in the surface area of this exoplanet, that is not permanently subjected in the lighting of its star but neither the space’s dark, varies from minus 31 degrees Celsius to minus 12 degrees.

Temperatures from Earth can occasionally be severe as well, without the need of blocking the existence of life. They differ in between minus 70 degrees Celsius in Antarctica to 148 degrees for the bottom from the ocean where several bacterias can live.

American astronomers detacted the 2nd exoplanet that spins around Gliese 581, but it is definitely an area that is not habitable. The amount from the exoplanets detected around this star reached the amount of six.

This is 1 of extrasolar systems that counts probably the most exoplanets identified so far.

On August 24, astronomers from Chile reported they discovered a photo voltaic method that contains planets – possibly 7 – that spin around a star very similar to our Sun.

Until now, the astrophysicists did not uncover one more earth they can say it is the twin sister of Earth amongst the 422 exoplanets found since 1995.

The new discovery, announced on Wednesday, will be the end result of 11 many years of observations, produced with the telescope of Keck observatory from Hawaii, at an altitude of 4.145 metres.