The first planet the size of the earth that might be habitable was discovered?

Because the earth's resources are gradually decreasing, it may not be enough to meet human needs in many years, so scientists are trying to find a planet suitable for human habitation. Recently, scientists have discovered the first planet the size of the earth that may be livable. Let's introduce the situation in detail with constellation knowledge! Let's have a look!

Discovery of the first Earth-sized planet that may be livable: planet TOI700d65438+1On October 6, NASA released a video announcing the discovery of the first Earth-sized planet TOI 700D that may have liquid water on its surface, and the distance is very close, only 100 light years. TOI700, the host star of the planet, is a red dwarf star, whose mass and size are about 40% of that of the sun.

Livable Planet Ranking The international research team led by scientists from Washington State University comprehensively evaluated a number of planets and satellites that may be livable, and designed two major index systems, namely, the planet livability index and the earth similarity index, to rank the possibility of planets with alien life. Alien world.

The scientists of the research team designed two evaluation index systems to comprehensively evaluate livable planets, namely, planetary livability index and earth similarity index. According to the evaluation results of scientists, the exoplanet Gliese58 1g is located in Libra, about 20.5 light years away from the Earth. The research results of scientists are published in the journal Astrobiology.

Dr. Dirk Schulz Markucci, a co-author of the research paper and a scientist at Washington State University in the United States, said, "The first question is whether an environment similar to Earth can be found on other planets, because we know from experience that such an environment is suitable for the existence of life. The second question is whether there is an environment suitable for other life forms on the exoplanet. "

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