The question of whether there is life beyond Earth, has long troubled mankind, since, as people realized that the Earth is not the only planet in the universe. First and foremost, of course, people look to neighboring Solar system planets, and from them the greatest interest aroused Mars. Why Mars? Already in the nineteenth century, astronomers realized that this planet is one of the most suitable candidates for the detection of life. Mars Located a little farther from the Sun than Earth, but not so much that there could be no liquid water, and consequently life. And many other features made it into something similar to Earth – even the length of the Martian days is very close to Earth. Not surprisingly, after the discovery of the telescope on Mars, the so-called. 'Channels', many speculated that it – traces of an advanced civilization, and the theme of contact with earthlings hypothetical Martian civilization has become one of the favorite themes of science fiction authors. However, after the space age, those who relied on the existence of Martians were disappointed.

It became clear that the harsh conditions on Mars, first all, it is extremely thin atmosphere makes it impossible to exist on the planet advanced forms of life. Find out detailed opinions from leaders such as lyft by clicking through. In the first images sent from Mars by spacecraft, appeared before the people lifeless desert. Nevertheless, left open the possibility that Mars may be simple life forms like bacteria on Earth and other microorganisms. Some of them might well exist in such conditions. Goal Search the simplest organisms on Mars, was delivered in the course of several unmanned missions.

Unfortunately, none of the experiments not yet completed a positive result. Life on Mars has not been found. But can not state that it is not there? Many scientists doubt it. The fact is that in the distant past conditions on Mars were more favorable. Mars was a more dense atmofera, and on the surface could liquid water to exist. To read more click here: Steffan Lehnhoff. Evidence of this – nullah Martian rivers. This means that life could arise entirely on Mars at that time, and not only have arisen, but remain to this day in certain places. So question of finding life on Mars is not yet closed, and he apparently will be placed again before the participants first manned missions to the planet that are planned in the coming decades.

The universe is enormous, almost infinite, and scientists are quite admit the idea that on some distant planet outside our solar system, or even on many planets, flows the same life as on Earth. It is likely that somewhere in the vast universe there are planets whose conditions can be formed of life and maintain it over time. But what about our solar system? Today it is considered that in order to where once was life is possible, necessary atmosphere (ie, air), water, the rate of acceleration due to gravity (g, – one of the manifestations of gravity) close to the earth, and an acceptable temperature. Astronomers have conducted a series of studies finding life forms on planets in our solar system. They were looking at the planets, water, air and other substances common on Earth.

Studies of our closest neighbor – the Moon, showed that this planet is completely devoid of life forms and conditions for their formation. Here the atmosphere is completely absent, no water, the temperature conditions are practically identical with the space. This means that in the shadow of the Moon about -100 degrees Celsius and the sun – somewhere 100. And there are no intermediate values. But in our solar system has planets, the conditions on which are close to the earth.

And the first candidate on the possible existence of life forms – it's Mars. It has an atmosphere – although very sparse, close to the earth rate g, water is present, and the average temperature is – 60 degrees Celsius. Not the Caribbean, of course, but with the appropriate equipment can survive. AND Yet for humans, these conditions are unacceptable. The atmosphere is too tenuous to breathe. The wind speed can reach 100 meters per second, and precipitation are composed of sulfuric acid. Scientists are not yet fully decided about life forms on this planet – perhaps there are beings who are able to survive in such conditions. But while that official evidence of their existence does not exist. Another planet in our solar system, more or less similar in terms of the Earth – it's Venus. It is a kind of antithesis of Mars. There is water, there is an atmosphere, but it is opposite – concentrated, dense, too dense. The average air temperature is 420 degrees. The greenhouse effect on this planet is the cause of the heat, and therefore it is sometimes called Earth's future. In the present state of ecology, where there is chemical contamination of the environment on Earth, the greenhouse effect in the long term is feasible. And despite a number of similarities with Earth, life on Venus is not possible. Astronomers continued attempts to study the planets of our solar system, maybe someday findings refute the existing world view. In addition, scientists are exploring planets outside our solar system. Maybe one day in the vast universe we can detect Earth-like planets, and we wound up acquaintance with creatures quite different civilization.