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Nasa discovered the super earth. Can we immigrate there?
Scientists at Harvard University speculate that these extrasolar planets have plate structures similar to those of the Earth and may be as suitable for breeding life as the Earth. Since Eugenia Rivera's team discovered gliese 876d in 2005, several super earths have been discovered in the world. Generally speaking, the super earth is only judged by quality. At present, the generally accepted upper limit is 10 times of the earth's mass, and the lower limit is 1 times, 1.9 times and 5 times of the earth's mass.
However, from the point of view of whether life can be bred, some scholars further pointed out that whether there is a significant atmosphere should be added to the definition of super-earth. The super earth named "GJ357d" discovered by NASA is at least 6. 1 times the mass of the earth. Kosakowski, a member of the team who discovered the new planet, said that if the planet had a dense atmosphere, its surface temperature would be suitable for the retention of liquid water, which in turn could give birth to life. It is impossible to confirm whether the planet has an atmosphere at present. Lisa Curtin 'an, an associate professor of astronomy who led the research, said that the telescope that will be put into use in 2025 may provide us with more information about this planet.
However, some netizens pointed out a "cruel" reality. Even if there is life on GJ357d, the distance of 365,438+0 light years is still too far for current human beings. At present, the speed of the fastest spacecraft-New Horizon probe is about 58,536 kilometers per hour. At this speed, it will take nearly 600,000 years to run 3 1 light-year. To span 600,000 years, human beings may need to achieve "eternal life" first.
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