The planets, on which life is possible - Interesting Facts
The planets, on which life is possible - Interesting Facts
In the universe more than 100 billion galaxies, and each galaxy -. Hundreds of millions of stars. It is therefore logical to assume that the earth - is not the only planet where life exists.
In our Milky Way galaxy about 50 billion planets, of which 500 million - could be potentially suitable for life.
Analysis of data collected by Russian and American scientists, especially with the help of NASA «Kepler» satellite, showed that 44% of stars have planetary systems, and 10-20% of planetary systems have the worlds habitable.
The closest planet to Earth, where life is possible - it is Mars.
The size of Mars is less than 2 times the earth, and the planet weighs 10 times less than our earth.
The planet Mars is red because of which a lot is contained in the soil of iron oxide.
The oxygen on the planet much less than on earth ... therefore be possible only in a spacesuit.
Seasons and days on Mars are similar to earth. The relatively low gravity makes it feel easier to 3 times higher than on the ground ...
The main thing is that there is water on Mars - in the form of ice, streams and lakes ...
And so briefly about the interesting facts about the planet Mars:
If the sun were the size of a door, the Earth would be the size of a coin, and Mars would be the size of an aspirin.
Mars - the fourth planet from the Sun, at a distance of about 228 million kilometers.
The day on Mars lasts a little more than 24 hours (the time it takes to Mars makes one complete revolution around its axis). A year on Mars is 687 Earth days.
Mars is a solid planet known as Earth-like planet. The solid surface of Mars is subject to change, such as volcanic eruptions, impacts of celestial bodies, the motion of the Martian crust and dust storms.
Mars has a thin atmosphere composed mainly of carbon dioxide (CO2), nitrogen (N2) and argon (Ar).
Mars has two moons named Phobos and Deimos.
Mars has no rings.
More than 40 spacecraft have been launched to Mars, ranging from orbiters and ending rovers that touched the surface of the Red Planet.
At the moment the Martian surface can not support life in the form in which we know it. A key goal of science is to determine the potential of the life of the past and future of the planet.
Mars is known as the Red Planet. The red color of Mars is due to iron minerals that oxidize soil.
The second planet where life is possible - Kepler-22b (22 bi)
Although Kepler-22b larger than the Earth, it orbits a star that is the size and the temperature is very similar to our native sun. Kepler-22b is two and a half times the size of Earth and is going through the greenhouse effect, which is similar to the Earth, that is, the temperature at the surface of the planet is 22 degrees Celsius. Her star system is 600 light-years away in the constellation Cygnus.
Planet №3 - Gliese 581g (Gliese 581 DJ)
This planet was discovered in 2010, the University of Puerto Rico at Arecibo thinks that Gliese 581g - one of the best candidates for containers of alien organisms. This rocky world is at a distance of 20 light years from our Sun, and two or three times heavier than Earth. The period around the star Gliese 581 in the constellation of Libra is about 30 days.
The fourth planet Gliese 667Cc (Gliese B this)
This planet is also located relatively close to the Earth: just 22 light-years away towards the constellation of Scorpio. The planet is about 4.5 times the size of Earth and orbits the Sun in 28 days. The star GJ 667C is included in the threefold system of stars. This star belongs to the class M dwarfs and weighs about a third of the mass of Earth's sun.
Planet Number 5 - HD 40307g (Al di DJ 40307)
This "super Earth", which is located in the orbit in a potentially habitable zone of the star home. It is located 42 light-years away in the constellation of artists. It is so close that a good telescope will be able to make out the details of what is happening in her surface. The planet revolves around its star at a distance of 90 million kilometers, which is slightly less than the distance from Earth to the Sun (150 million km).
The sixth planet where life is possible - HD 85512b (Al di bi 85512)
HD 85512b introduced in 2011 as part of the treasure, consisting of 50 planets discovered precision HARPS telescope in Chile. This planet is about 3.6 times the mass of Earth and is located 35 light-years away in the constellation Vela. Researchers hope one day to find water on its surface.
Planet number 7 is called Tau Ceti e (tau sati hey)
This planet is located near Tau Ceti, which are so fond of writing fiction, hinting at the extraterrestrial life in the solar system, was discovered in December 2012 at a distance of 11.9 light years from Earth. This world is a "super Earth" at least 4.3 times as massive as Earth. Depending on the atmosphere, Tau Ceti e may be either warm the planet, which is suitable for living or deadly hot as Venus.