Astronomers have known since the 1990s that planets exist around pulsars. It’s a reasonable hypothesis that planets might also exist around black holes, which have a weaker impact on their local environment than rotating neutron stars. In 2019, Harvard astrophysicist Avi Loeb and NASA’s Jeremy Schnittman proposed that inhabited planets might exist around … Continue reading The ‘Gargantua’ Hypothesis: Does the Milky Way’s Supermassive Black Hole Impact the Galaxy’s Planets?