Supermassive Black Holes Might Really Be ‘Traversable’ Wormholes, Astrophysicists Suggest by Translucidmind | Dec 11, 2020 | Highlight of the Week https://www.vice.com/en/article/pkynj8/supermassive-black-holes-might-really-be-traversable-wormholes-astrophysicists-suggest