Black holes are regions of space-time with vast amounts of gravity. Scientists initially thought that nothing could escape the boundaries of these massive objects, including Light.
The precise nature of black holes has been challenged ever since Albert Einstein’s general theory of relativity gave rise to the possibility of their existence. Among the most famous findings was English physicist Stephen Hawking’s prediction that some particles are emitted at the edge of a black hole.
In classical physics, the vacuum is thought of as the absence of matter, Light, and energy. In quantum physics, the vacuum is not so empty, but filled with photons that fluctuate in and out of existence. However, such Light is virtually impossible to measure. Therefore, if black hole gravity can create photons in a vacuum, so can acceleration.