Why do the terrestrial planets lack hydrogen and helium in their atmospheres
The terrestrial planets lack hydrogen and helium in their atmosphere because their relatively low gravity, due to being smaller in size and therefore having lower mass, failed to keep these light gases from escaping into space.
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Asked 2/5/2022 10:09:58 PM
Updated 283 days ago|3/7/2025 10:46:43 PM
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MrG [3/7/2025 10:46:42 PM]
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