I don’t get it though I thought some guy proved that the speed of light equation was incorrect bc the “C” or constant in E=MC2 is relative & not constant so the speed of light is unknown or some shit like that,
So how is this… I’m lost obviously
Monster Black Hole Spins at Half the Speed of Light
For the first time, astronomers have directly measured how fast a black hole spins, clocking its rotation at nearly half the speed of light.
The distant supermassive black hole would ordinarily be too faint to measure, but a rare lineup with a massive elliptical galaxy created a natural telescope known as a gravitational lens that allowed scientists to study the faraway object.