  I review the major open science questions in exoplanet atmospheres. These are
mainly focused in the areas of understanding atmospheric physics, the
atmosphere as a window into other realms of planetary physics, and the
atmosphere is a window into understanding planet formation. For gas giant
planets, high quality spectra have been delivered from JWST and from the
ground, enabling the determination of atmospheric abundances. For the very
common sub-Neptune planets, we are just beginning to obtain and interpret JWST
spectra. For the terrestrial planets, which can be studied only around M stars,
the field aims to determine if these planets even have long-lived atmospheres.
