Evidence of the existence of alien life
Each of us is composed of atoms that were once part of an exploded star. Including and are carbon, nitrogen and oxygen - some of the basic ingredients necessary for life. Over billions of years, these atoms condense, creating a cloud of gas, new stars and planets. Most likely, all of the same parts of life are scattered throughout the universe, in fact even in the solar system today we find extraterrestrial bacteria. Today the question is not worth it as "Is there other life in space?" Scientists prefer to talk not about the reality of aliens and a time when we do finally meet.
Water on Mars
A team of scientists has shown that at least one-fifth of the red planet was completely covered with a true H20. All the signs of life that certainly existed in the ocean can be found deep in the sands of Mars. Interestingly, that life on Earth originated about the time when Mars dried up past the lake.
in the sand Traces
Two years ago, Curiosity probe detected beneath the surface of Mars, traces of nitrogen, hydrogen, oxygen, phosphorus and carbon. The 2014th NASA published a report which indicates the presence of organic compounds found by the probe. All this shows that, most likely on Mars really was life.
Asteroids and comets
Scientists believe asteroids and comets key factor in the emergence of life on our planet. In particular, the comet, according to the report published in August, brought to Earth the amino acids, without which the development of all organisms would be impossible. Given the abundance of comets in space, there is every chance that they can do the same for the other planets.
The tiny moon of Jupiter, Europa, covered with small faults. Astronomers believe: it is an indicator of the places where the water went into the satellite's crust. That's why NASA is investing hundreds of millions of dollars in future missions projects, hoping to discover life beneath the surface of Europe.
The same outlook has Enceladus - a little earlier, scientists confirmed this month that the ocean is hidden under the icy shell of this giant. If this is true, then Enceladus is the ideal place for the development of life.
In addition to the confirmed data about Enceladus and Europe, scientists suspected the presence of water for another ten small objects in our solar system. The problem here is the same: the water can be hidden under the mantle of the planet.
In addition, the largest of Saturn, Titan, is the only object in the solar system where the lake located at the surface. Here, however, it can not be conceived like our lives, as these lakes are not made of water, but of liquid titanium. However, earlier this year, scientists at Cornell Research Center have proved that life can exist and methane, oxygen-free basis.
It is possible that life, yet can emerge only in conditions similar to earth. That would mean only one thing: the only chance to discover the aliens exists only outside our solar system. In July last year, scientists have discovered a very Earth-like planets, at a distance of 1400 light years. Its size, orbit the sun, and even the age of our terms are the same. Thus, there is no difficulty to the emergence of life on the surface of this planet.
Where are the aliens?
Many quite reasonably ask: if there are extraterrestrial civilizations, then why are we about them not yet heard. Astronomers have an answer to this question. The fact that the Milky Way - is not the most suitable place for the origin of life. But several others have already discovered galaxy could conceivably contain more than 10,000 Earth-like planets.
We and all our surroundings created from heavy atoms, born as a result of explosions of supermassive stars. It not only connects us with the whole universe, but also highlights the possibility of extraterrestrial life. This, at least, is confident the famous astrophysicist Neil de Grasse Tyson, whose recently published work on this topic has become a hit among the scientific community.