👇 WASP-39 b is an old friend! In August, Webb showed the first clear evidence of carbon dioxide in a planet outside our solar system. New data from the same planet also shows water, sulfur dioxide, carbon monoxide, sodium and potassium. #JamesWebb
Exoplanet spectroscopy is the most impressive thing JWST has done to me, and the thing I highlighted in my presentation to my intro astronomy class about JWST!
Walter Freeman
in reply to NASA • • •