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Of the 3,869 confirmed exoplanets, scientists have only discovered a few "hot Neptunes".
Science Alert writes about this
Astrophysicists at the University of Geneva have concluded that a small number of such planets are due to their overheating: the celestial bodies are rapidly losing their atmosphere .
"Hot Neptune" – a class of exoplanets whose mass is close to that of Neptune or Uranus. These cosmic bodies are always close to their star, at a distance of at most 1 astronomical unit.
The researchers studied the gas giant GJ 3470b located in the constellation of Cancer, 97 light years from Earth. The exoplanet is close to a bright, sun-like bright sun.
Observations have shown that the GJ 3470b was losing an atmosphere at a very high speed – every second in the outer space near Neptune, very hot, throws 15,000 tons of hydrogen and d & # 39; other gases or 10 to 16% of the cosmic body's atmosphere every billion years.
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