YEREVAN, may 29 – news-Armenia. Recently NASA added 1284 object to the list of planets outside the Solar system, the existence of which is confirmed. Now these exoplanets, there are more than 3000, and that’s just those that people can detect.
Scientists believe that almost every star in the milky Way have, on average, at least one planet rotating around it. Only one in our galaxy more than 100 billion stars. With such a scale it is hard to believe that we are the only inhabitants of the Universe.
Futurist.ru offers a look at some of the most promising places we could find life outside of our system.
Scientists judge whether a planet be inhabited, on the basis of such factors as size, kamenistoe of soil and distance from the parent star. More than a rocky planet and the closer it is to the habitable zone where planets can have liquid water on the surface, the more chance it could be habitable.
Here are eight of the brightest candidates for the role of planets with organic life.
Kepler-442b
If you rely on the factors listed above, this planet needs to be habitable even with a high probability, than the Earth. The size of this exoplanet, open in 2015, is comparable to the size of the Earth. The distance from our planet – about 1100 light years (1 light year – 9 460 730 472 581 km). It rotates in the habitable zone of a star slightly cooler than our Sun. If Kepler-442b will be quite rocky, the planet can be approximately two times more massive than Earth.
Kepler-186f
This planet was discovered in 2014. It is about 10% bigger than Earth and has a fairly rocky terrain. The planet is in the habitable zone of its star, which is cooler and redder than the Sun. Distance from the Earth is 500 light-years.
Gliese 667 Cc
Planet orbits a cool, dim star — a red dwarf at a distance of about 24 light years from Earth. The planet was discovered in 2011, it is quite rocky, is in the habitable zone of its star. According to preliminary estimates, the mass of the planet is almost four times the size of Earth, but scientists are still unable to determine it accurately.
Alpha Centauri
Alpha Centauri is a system of three stars at a distance of only 4 light years from Earth. The system is now very famous thanks to British physicist Stephen Hawking and Russian businessman Yuri Milner, who said that will create micro-and send them there. The project was named Breakthrough Starshot. Scientists believe that this system can be discovered a planet very similar to Earth and located in the area habitat one of its three stars.
TRAPPIST-1
This ultracold dwarf at a distance of 40 light years from Earth in the headlines of many Newspapers when scientists said that in its orbit can be three planets the size of ours. Despite the fact that these planets are outside the habitable zone of the star, two of them are tidal locked. Tidal capture is something that happens when a celestial body under the influence of gravity is always facing one side to another celestial body. In this case, two planets permanently facing the star: this means that may form water pockets, which could arise in life.
Kepler-22b
This exoplanet was discovered in 2011, and of all the planets discovered she was recognized as similar to Earth. It is located at a distance of 600 light years from Earth and in a comfortable position in the habitable zone of its star. Kepler-22b is two times bigger than Earth, average temperature of the surface of 72 degrees Fahrenheit, about 22 degrees Celsius.
Kepler-62
This star is slightly cooler than the Sun, is at a distance of 1200 light-years from us. Two planet in its orbit can be inhabited – Kepler-62e and Kepler-62f, open in 2013. They are slightly more massive than Earth located in the habitable zone of its star.
Kepler-452b
This is another super-Earths, which is at a distance of 1400 light-years from our planet. Kepler-452b orbits a star that is 1.5 billion years older than our Sun, but the same hot. The planet open in 2015, is the habitat of this star about 6 billion years. This time is sufficient for the emergence of life in the presence of all necessary substances and conditions.
