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What are distant stars whispering about





For a long time, the question of the existence of planetary systems like the Sun remained open. But in the 90s the first exoplanet was discovered, and since then the number of such finds has been steadily increasing.



There are many gas giants in space, but the most interesting question is the search for potentially habitable planets in the habitable zone of planetary systems.

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It was for this purpose that in 2009, NASA launched the Kepler telescope.



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By the transit method (that is, by tracking those moments when the exoplanet closes part of its own star during rotation), Kepler can detect exoplanets that are comparable in size to the Earth. For example, Kepler-186f was opened in April of this year.

This is how artists imagine it to themselves:



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It was possible to calculate the size of this exoplanet, but its mass and composition are not yet known.

A number of difficulties are generally associated with the clarification of such data: you need huge power telescopes and a lot of money, but you can never get one hundred percent result. However, the scientist Keivan Stassun came up with a rather elegant method that can help solve some of these problems. You just need to analyze not the light, but the sound.





Original video




For a lot of fascinating details you can go here kepler.nasa.gov



And in the comments you, as usual, can recommend us an interesting video for translation and dubbing.



PS For help in preparing the post thanks flerant

Source: https://habr.com/ru/post/364163/



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