On the passing of the test act in 1681 he refused to take the required oath except with a reservation.
Located in the Coma Cluster, about 300 million light years away from Earth, the orb is actually a distant view of the giant elliptical galaxy NGC 4889. At the center of that galaxy lies a sleeping giant: a supermassive black hole that is 21 billion times the mass of our sun. The size of a black hole can be estimated by its event horizon, or the distance from the center of the black hole at which nothing can escape its gravitational grasp.
Black Holes: Facts, Theory & Definition. 1  Stellar black holes â small but deadly. 2  Supermassive black holes â the birth of giants. 3  Intermediate black holes â stuck in the middle. 4  Black hole theory â how they tick. 5  Interesting facts about black holes. 1  If you fell into a black hole, theory has long suggested that gravity would stretch you out like spaghetti, though your death would come before you reached singularity. 2  Black holes do not suck.. 3  The first object considered to be a black hole is Cygnus X-1.