At the heart of almost every sufficiently massive galaxy, there is a black hole whose gravitational field, although very intense, affects only a small region around the centre of the galaxy. Even though these objects are thousands of millions of times smaller than their host galaxies, our current view is that the Universe can be… Continue reading EFFECTS OF BLACK HOLES BEYOND THEIR OWN GALAXIES
Category: Black Hole
MEASURING THE SPIN OF A BLACK HOLE
Astronomers are able to measure the masses of black holes in a relatively straightforward way: watching how matter moves in their vicinity (including other black holes), affected by the gravitational field.