Glow of an exoplanet may be from starlight reflecting off liquid iron
Briefly

A 'glory' phenomenon, resembling a rainbow, might explain the mystery of observations showing more light on the eastern terminator of exoplanet WASP-76B than its western terminator.
Observations from various telescopes, including CHEOPS, Hubble, Spitzer, and TESS, suggest that WASP-76B's extra light is likely due to a 'glory' occurrence caused by light interacting with spherical cloud droplets.
Read at Ars Technica
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