If a black hole is a collapsed star, then initially it will have the same mass as the original star, albeit occupying a smaller volume.
The only specimen of the celestial zoo that fitted this description was a collapsed star.
General relativistic effects, on the other hand, show up mainly for the "very large" bodies such as collapsed stars.
Such a regime may hold at the centre of galaxies or close to collapsed stars.
It's like a dark star, a collapsed star, maybe even some kind of neutron star.
Beckett refines and reduces human experience to the dangerous density of the black hole created by a collapsed star.
Nuclei can be forced close together, but only under the immense pressures found inside a collapsed star.
Doing engineering there would present substantial difficulties, even if a collapsed star were handy.
Together, they analyze the pictures for previously undiscovered supernovas, the remains of collapsed stars.
Light, of course, is the fastest thing in the universe, and so the collapsed star has cut itself off.