https://astrobiology.com/2022/10/simulating-reflected-light-coronagraphy-of-earth-like-exoplanets-with-large-ir-o-uv-space-telescope-impact-and-calibration-of-smooth-exozodiacal-dust.html
Observing Earth-like exoplanets orbiting within the habitable zone of Sun-like stars and studying their atmospheres in reflected starlight requires contrasts of ∼1e−10 in the visible.
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