Life as we know it can evolve into a planetary system only in the ecosphere of each star. The Ecosphere is the part of the cosmic environment in which planets or moons may exist on liquid water, which enables the emergence and survival at least in simple organisms. To assess the ecosphere of the star, it is important to know which spectral class he belongs. Spectral class is known as one of the Harvard classification system, after all the stars are grouped according to their surface temperature and luminosity.
For several years, researchers suspect that the basic building blocks could be reached for the first biomolecules on asteroid and comet impacts on our planet.
That amino acids are the basic building blocks of proteins, in space and on meteorites gives is already proven several times. For the bases, which encode crucial information today in our genes, there is clear evidence, however, lacked so far.
The exobiology tried three ways of life outside the earth to prove.
Direct search within the solar system, and possibly transport a sample to Earth by space probes.
Search for the biological signature of life on exoplanets by astronomical observation methods. There are several indirect methods to infer life. It is assumed that certain molecular compounds can be produced only by living permanently. So if you find for example in the light spectrum (absorption spectrum) of a distant planet such molecules, which would be a strong indicator of life.
Search for signs of extraterrestrial technology. Clearly speak for example of life Signals of extraterrestrial civilizations, how they tried to find the SETI project. So far this project is granted, however, still no success, even if accepted, that there could be hundreds of civilizations in our galaxy alone (Milky Way). This number was determined using the Drake equation and is subject to considerable variability depending on the assumptions made.
For several years, researchers suspect that the basic building blocks could be reached for the first biomolecules on asteroid and comet impacts on our planet.
That amino acids are the basic building blocks of proteins, in space and on meteorites gives is already proven several times. For the bases, which encode crucial information today in our genes, there is clear evidence, however, lacked so far.
The exobiology tried three ways of life outside the earth to prove.
Direct search within the solar system, and possibly transport a sample to Earth by space probes.
Search for the biological signature of life on exoplanets by astronomical observation methods. There are several indirect methods to infer life. It is assumed that certain molecular compounds can be produced only by living permanently. So if you find for example in the light spectrum (absorption spectrum) of a distant planet such molecules, which would be a strong indicator of life.
Search for signs of extraterrestrial technology. Clearly speak for example of life Signals of extraterrestrial civilizations, how they tried to find the SETI project. So far this project is granted, however, still no success, even if accepted, that there could be hundreds of civilizations in our galaxy alone (Milky Way). This number was determined using the Drake equation and is subject to considerable variability depending on the assumptions made.
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