ΜΑΥΡΕΣ ΤΡΥΠΕΣ Every Point Is A Supermassive Black Hole In Most Revealing Astronomical Study Ever By the end of the decade, we may discover one million black holes. Ethan Siegel Ethan Siegel Follow Mar 1 • 3 min read A large enough mass in a compact volume inevitably forms a black hole. Image for postImage for post Both inside and outside the event horizon of a Schwarzschild black hole, space flows like either a moving walkway or a waterfall, depending on how you want to visualize it. At the event horizon, even if you ran (or swam) at the speed of light, there would be no overcoming the flow of spacetime, which drags you into the singularity at the center. Outside the event horizon, though, other forces (like electromagnetism) can frequently overcome the pull of gravity, causing even infalling matter to escape. (ANDREW HAMILTON / JILA / UNIVERSITY OF COLORADO) In 1964, we observationally detected our first one: Cygnus X-1. Image for postImage for post The X-ray emitter Cygnus X...