An exoplanet cloud is a suspended condensate aerosol that scatters or absorbs radiation. Its particle sizes, composition, vertical extent, and horizontal coverage shape transmission, reflection, and thermal-emission spectra.
An exoplanet cloud deck is an optically thick cloud layer whose top pressure fixes the deepest level visible over a wavelength interval. A high deck can truncate a transmission spectrum and mute molecular features.
Atmospheric haze consists of small suspended particles, often produced photochemically. A haze can flatten molecular features or produce a wavelength-dependent scattering slope.

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  1. Exoplanet atmosphere
  2. Exoplanet
  3. Astrophysics
  4. Branch of physics
  5. Physics
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