So I was wondering the other day.
What if singularities do not exist?
What if singularities do not exist?
What if they cannot exist?
What happens if singularities, for whatever reasons, are absolutely forbidden?
What happens if, instead of a singularity, there is a solid object more or less immediately beneath the "surface" of the event horizon?
Now, all the physicists are immediately up in arms because "the numbers say..."
What if the numbers are wrong?
Now, all the physicists are immediately up in arms because "the numbers say..."
What if the numbers are wrong?
What if the approximations are even more approximate than we believe?
What happens if matter is not allowed to fall out of the universe?
Then a black hole becomes an area of extremely high, but finite density.
extremely high, but finite curvature. (aka extremely high, but finite gravity.)
And the search for a theory of quantum gravity becomes moot, because we never have infinite gravity at the planck scale.
It also means we can stop looking for a unified theory, cause gravity simply doesn't play well with others. Doesn't have to.
If there is no singularity, there is no quantum gravity problem, cause they ain't never a situation where gravity matters at the quantum scale.
It was reading Traveling at the Speed of Thought, (Daniel Kennefick, 2007) which sort of started me down this particular road, since it was there I learned that gravitational interactions are calculated as though gravity emanated from a singularity at the center of the astronomical mass, as this is evidently easier than calculating from the actual surface of the object. Even though everyone freely admits that the objects gravity is not actually the result of the distortion of spacetime by a zero dimensional object with the mass of that particular object, be it planet, star, whatever. But for mathematical purposes it can be treated that way.
But I have to wonder.
There have been some new hypotheses I've read recently that are intriguing, one of which states that spacetime itself may exert a force that prevents matter from collapsing into a singularity of infinite density and gravity. Under one of it's variants black holes are actually hollow spheres filled with, something really strange. But the point is that there is no point.
No singularity.
There are also folks working on theories which would eliminate the need for dark matter, since the speed of galactic orbits can/might be accounted for by the error of calculating gravitational effects for galaxies, (which are rather large, usually non spherical, and without a clearly defined center), as though their gravitational field was a zero dimensional point somewhere in the center.
Spacetime is strange stuff, and though Einstein's theories are the best we have to date, they are certainly not the final word on the subject.
It also means we can stop looking for a unified theory, cause gravity simply doesn't play well with others. Doesn't have to.
If there is no singularity, there is no quantum gravity problem, cause they ain't never a situation where gravity matters at the quantum scale.
It was reading Traveling at the Speed of Thought, (Daniel Kennefick, 2007) which sort of started me down this particular road, since it was there I learned that gravitational interactions are calculated as though gravity emanated from a singularity at the center of the astronomical mass, as this is evidently easier than calculating from the actual surface of the object. Even though everyone freely admits that the objects gravity is not actually the result of the distortion of spacetime by a zero dimensional object with the mass of that particular object, be it planet, star, whatever. But for mathematical purposes it can be treated that way.
But I have to wonder.
There have been some new hypotheses I've read recently that are intriguing, one of which states that spacetime itself may exert a force that prevents matter from collapsing into a singularity of infinite density and gravity. Under one of it's variants black holes are actually hollow spheres filled with, something really strange. But the point is that there is no point.
No singularity.
There are also folks working on theories which would eliminate the need for dark matter, since the speed of galactic orbits can/might be accounted for by the error of calculating gravitational effects for galaxies, (which are rather large, usually non spherical, and without a clearly defined center), as though their gravitational field was a zero dimensional point somewhere in the center.
Spacetime is strange stuff, and though Einstein's theories are the best we have to date, they are certainly not the final word on the subject.
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