EarthSolar t1_jdwuwab wrote
Reply to comment by PhoenixReborn in [NASAWebb] TRAPPIST-1 b: We give it a one (M-dwarf) star review; it lacks atmosphere. Webb found the dayside temperature of this rocky exoplanet to be about 450º F (227º C) — suggesting it has no significant atmosphere by Easy_Money_
The idea of high altitude haze is for the haze to be in a zone where the atmospheric pressure is too low to effectively transport heat from dayside to nightside, and thus causing it to look like airless planet. That said the haze itself might move and jeopardize this, but I figured it's better to ask.
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