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The Life in Universe

In: English and Literature

Submitted By glebbykov
Words 601
Pages 3
A human is the most advanced organism on the Earth. However, to come to this point, we went through 4 billion years of this phenomenon called evolution. However, the Universe, to our knowledge, is approximately 15 billion years. My idea is that in this 15 billion years life could develop everywhere. This means that how do you think we came to exist in the Universe. Most people think that planet Earth is unique in the whole Universe. Even ancient scientists, such as the genius Aristotle, put the Earth at the centre of the Solar system. However, now we know that it is not true. May be we were wrong in thinking that we are alone in the universe?
The emergence of life on Earth gives obvious background for the assumption that the same conditions could emerge on other planets. This means that if life on the earth started 4 billion years ago, why it could not start somewhere else. Soviet astronomer Iosif Shklovsky cautiously suggested that favorable conditions for life exist on planets orbiting near the same age, cold enough and stable single stars of spectral type G, K, M (similar properties to the Sun). The number of stars in our galaxy can be estimated as 1000000000. Therefore, many planets like earth formed at the same time. Therefore, lots of time was to form the life.
The discovery of planets in other star systems also indirectly indicates the availability of the universe conducive to the emergence of life in the "habitable zone." Now modern technology allows us to find out what what made planet, using spectrograph. As we know when the light goes through different element, it refracts different. In addition, temperature affects it. However, we only can the composition of the atmosphere, but not the hard materials Since the second half of the XX century, scientists were searching for extraterrestrial life within the solar system and beyond. According to…...

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