General relativity is a theory of gravity established by Einstein in geometric language. He changed gravity to describe the curved space-time of matter and energy in the genetic space-time to replace the traditional view that gravity is a kind of force and this kind of space-time curvature is directly related to the energy momentum of matter and radiation in space-time.
According to the above definition, which of the following options does not involve general relativity?
Scientists have discovered that when a star is dense enough, its gravity makes the region of space-time so distorted that light cannot escape, thus discovering the existence of a black hole