But, explaining the team, there is a chance that all seven planets are Venus-like worlds with hot, dense atmospheres. The star probably went through a robust phase in its younger years, burning hotter and lighter and potentially destroying the chances of life. If some TRAPPIST planets had floating waters, they would have evaporated. Then, instead of remaining in the atmosphere to fall back as rain, the extreme UV light from the star would break the molecules to hydrogen and oxygen. The hydrogen may come into space, leaving a thick atmosphere of almost pure oxygen, which has not previously been seen.
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