An international team including NASA has plans in development for a follow up to JWST called The Large Ultraviolet Optical Infrared Surveyor (LUVOIR) [1]. There

An international team including NASA has plans in development for a follow up to JWST called The Large Ultraviolet Optical Infrared Surveyor (LUVOIR) [1]. There's two versions, LUVOIR-A with a 15m primary mirror and LUVOIR-B with a 8m primary mirror (compared to JWST 6.5m primary mirror) [2] From the Wiki "LUVOIR would be able to analyze the structure and composition of exoplanet atmospheres and surfaces. It could also detect biosignatures arising from life in the atmosphere of a distant exoplanet." Proposed launch date 2039 (quite a wait). [1] https://en.wikipedia.org/wiki/Large_Ultraviolet_Optical_Infrared_Surveyor#LUVOIR-B https://en.wikipedia.org/wiki/Large_Ultraviolet_Optical_Infr... [2] https://upload.wikimedia.org/wikipedia/commons/a/aa/Comparison_of_LUVOIR-A_and_-B_primary_mirrors_with_Hubble_and_JWST.png https://upload.wikimedia.org/wikipedia/commons/a/aa/Comparis...