Why is Mercury’s very thin atmosphere made of helium?
| September 22, 2020 | Education
The planet Mercury has an extremely rarefied helium atmosphere. The existence of such an atmosphere is supported by the decay of radioactive isotopes in the planet’s crust and the release of helium from the surface and by capturing its cores from the solar wind. Without the constant action of these factors, Mercury would have lost its gas shell literally in a day.
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