Hundreds of millions of years followed before matter started to collect into vast clouds then coalesce and collapse, under its own weight, into the first stars. All the matter in the Universe, all the space and even time, itself, was released during this event. Most astronomers believe that the Universe began about 15 billion years ago with an explosion known as the Big Bang. In fact, we would not be here without them.
Thus it's now believed that black holes are not only common throughout the Cosmos but they play a fundamental role in the formation and evolution of the Universe we inhabit today. This one was between the mass of a supermassive black hole and the orbital speed of stars in the outer regions of their galaxy where the direct gravitational influence of the supermassive black hole should be weak: the larger the black hole, the faster the outer stars travel. Other studies found another strong correlation. This 1 to 700 relationship supports the notion that the evolution and structure of a galaxy is closely tied to the scale of its black hole. Almost a decade ago, researchers calculated that the mass of a supermassive black hole appeared to have a constant relation to the mass of the central part of its galaxy, known as its bulge (think of the yolk in a fried egg). We also now know that supermassive black holes are inexorably linked to the galaxies that encircle them.įor example, the size of a supermassive black hole appears to have a direct correlation to the galaxy where it exists.
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