The suggested link referred to as a cosmological coupling was born from observations of black holes at the. The distribution of energy cant be reduced to at least radius Rgs(or Rgs. A controversial new theory suggests that supermassive black holes that lurk at the heart of most large galaxies could be the source of dark energy, the mysterious force driving the accelerating expansion of the universe. O humankind these are actually knots your Lord has put there in the fabric of space and cosmos which keep it tight and balance against the expansion of the universe. Black hole does not have a singularity and there exists a zone that has a uniform energy density within the black hole. So actually all stars and galaxies are rotating around giant black holes. Such black holes are like hubs around which many galaxies including our milky way rotates. The black hole in our galactic center is thought to have a mass of 4 millions suns and diameter of 17 million Km. Senovilla, David Garfinkle We review the first modern singularity theorem, published by Penrose in 1965. It is extremely small, so it has actually an infinite density. With such a strong gravity, the matter squeezed to just a point. Once any stuff is inside it, that stuff will fall to the center. It is not a physical surface, but a sphere enveloping the black hole that marks where the escape velocity is equal to the speed of light. The event horizon is the “point of no return” encompassing the black hole. There are two fundamental parts to a black hole: the singularity and the event horizon. Similarly, If you could squeeze the Earth down to the size of a marble tile, it would collapse on itself and become a black hole. For becoming a black hole the mass of our sun would need to be pressed into a volume with a radius of about 3 km. You can say that anything with an escape velocity higher than the speed of light is a black hole. Any object that is smaller than its Schwarzschild radius is a black hole. The event horizon 'protects' the singularity. The radius at which a mass has an escape velocity equal to the speed of light is called the Schwarzschild radius. These are what we call the black holes: a point of infinite density, surrounded by an event horizon located at the Schwarzschild radius. If we shrink the Earth’s mass into a sphere with a radius of 9 mm, the escape velocity would be the speed of light. For example, a rocket must accelerate to 11.2 km/s almost 40,000 km/h to escape Earth’s gravity. There are two things that affect the escape velocity, the mass of the object and the distance to the center of that object. In physics, Escape velocity is defined to be the minimum velocity an object must have to escape the gravitational field of a massive body, that is, in our case can escape the earth without ever falling back.
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