The equations of general relativity imply that if a large body collapses under its own gravity, nothing can stop it becoming a black hole, a region of space with gravity so strong that even light can’t escape it. Astronomers have deduced that nearly every super-massive galaxy, including our own, has a black hole at its center.
Physics has no force to stop this collapse, so a black hole is assumed to be a point of infinite mass density, called a singularity. The event horizon of a black hole is the region from which even light can’t escape its gravity pull. In current physics then, a black hole is a singularity of infinite mass density that creates an event horizon around it (Figure 5.11).
Yet this conclusion is based on equations that don’t predict as theories do. In most sciences, equations that produce infinities are assumed to be incomplete, as extrapolating an equation beyond its known data range is unwise, so singularities are speculative.
In contrast, processing models ban infinities because they are incomputable. Matter can’t become infinitely dense if the network of space has a pixel limit. If a point of space has a finite bandwidth, the matter it can handle is limited, so a black hole isn’t a singularity but a region of space that has accepted all the matter it can, and can take no more. Just as a network with a finite transfer rate limits the speed of light, its finite capacity limits the mass density of a black hole, so what stops the collapse of a black hole isn’t a force but the bandwidth of space itself.
Black holes expand as they acquire matter because more space is needed to handle more matter, so a black hole’s radius is proportional to it’s mass. In contrast, if that mass added to a point singularity, it should decrease as an inverse square, as gravity does.
In this model, a black hole isn’t a singularity but a volume of space at maximum capacity, with no infinities. Instead of radiating light, it absorbs it, so black holes are in effect black stars that absorb energy (Barcelo et al., 2009). The center of our galaxy then isn’t a hole at all, but a super-massive dark star called Sagittarius A* that holds it together by generating dark matter. To us, as matter, it is destructive, but for the galaxy, it is beneficial.