Massive planet too big for its own sun pushes astronomers to rethink exoplanet formation

LHS 3154b, a newly discovered massive planet that should be too big to exist. The Pennsylvania State University – By Suvrath Mahadevan, Verne M. Willaman Professor of Astronomy & Astrophysics, Penn State and by Guðmundur Kári Stefánsson, NASA Hubble Fellow, Department of Astrophysical Sciences, …