The chemical and mass evolution of exoplanet atmospheres is shaped by their specific X-ray through ultraviolet (5 – 3200 Angstroms) irradiance history. X-ray and EUV (5 – 911 Angstroms) radiation largely contributes to atmospheric heating via photoionization, while far- and near-UV emission (912 – 3200 Angstroms) drives photochemistry. The (uncharacterized) variance between young star spectra […] The post The Unique Ability Of The Hubble Space T…
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