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Astronomers Discovered WASP-193b, An Exoplanet 50% Larger Than Jupiter But Only 14% Of Its Mass, Making It The 2nd Lightest Known Planet After Kepler 51d. Located 1,200 LY Away, The “Puffy Jupiter” Is Likely Comprised Mainly Hydrogen & Helium, And Its Extended Atmosphere Is Ideal For Studying Its Planetary Formation With Tools Like JWST.

Giant oddball planet has the density of fluffy cotton candy, study finds | CNN

https://edition.cnn.com/2024/05/16/world/cotton-candy-exoplanet-discovery-wasp-193b-scn/index.html?iid=cnn_buildContentRecirc_end_recirc

Astronomers say they have uncovered an unusual planet that’s about 50% bigger than Jupiter and somehow still the second lightest planet ever found.