Will there be life on other planets differ from earth? In order to answer this question, we can turn to the diversity of animal life on our planet, which was presented in the entire history of the existence of our world. If such a diversity of species could appear on Earth, why wouldn’t she be in other parts of the Universe?
On which planets may have life?
For a long time astronomers believed that our Solar System is unique in its kind, as it is around our star turn as many as 8 planets! It was not until 1988, when the orange giant Gamma cephei was discovered the first extrasolar planet. Since all the planets outside our open system are called exoplanets.
The discovery of the first exoplanets has accelerated the search for life outside our Solar system. Huge distances to other worlds means that they are almost impossible to achieve with modern space probes, so scientists have been working with remote sensing tools like telescopes. Despite the fact that currently we are only able to observe these distant worlds, even this may not be enough to understand what climatic conditions prevail on different exoplanets. Detailed interpretation of these observations requires the development of complex models of the planetary climate and evolution, enabling scientists to determine which exoplanets can certainly be a life.
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Dr. Stephanie Olson of the University of Chicago finds that some planets in our Galaxy or even in our neighborhood, can have even better conditions for the prosperity of intelligent life than the Earth itself. According to this view, life must be sought on those exoplanetsthat have more favorable ocean circulation. Such worlds may be better suited to sustain life, which can be even more advanced than life on Earth.
Team Stephanie Olson also believes that life on other planets may begin to develop on the earth scenario. So, the main motive of this idea was the fact that life in earth’s oceans is directly dependent on the phenomenon of upwelling. Upwelling (or upward flow) returns all the necessary nutrients from the ocean floor in the Sunny part, where there is photosynthetic life. For example, algae. The more similar movement developed in the ocean, the more developed will be living beings that live on the surface of the tank.
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What exoplanets can support life?
In order to understand what exoplanets are really able to support the development of life on its surface, scientists have modeled possible set of potentially habitable worlds. So, scientists have discovered that the most effective upwelling, and hence the most developed life, can be observed in the oceans on such planets which have a slower speed of rotation around its axis. In addition, habitable planets should be surrounded by high-density atmosphere and have continents.
Another conclusion of the researchers is that, most likely, that Land is not really suitable for life. And, quite possibly, scientists have found that the most potentially habitable world somewhere in the stars Trappist-1, the life of which are currently difficult to find due to lack of technical equipment.