Black Holes Size Comparison

A black hole is a region of spacetime where gravity is so strong that nothing—no particles or even electromagnetic radiation such as light—can escape from it. The theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole. The boundary of no escape is called the event horizon. Although it has an enormous effect on the fate and circumstances of an object crossing it, according to general relativity it has no locally detectable features. In many ways, a black hole acts like an ideal black body, as it reflects no light. Moreover, quantum field theory in curved spacetime predicts that event horizons emit Hawking radiation, with the same spectrum as a black body of a temperature inversely proportional to its mass. This temperature is on the order of billionths of a kelvin for black holes of stellar mass, making it essentially impossible to observe directly.

In this video the size of black holes is compared and also the schwarzschild radius of a human being, of some well-known celestial bodies.
Unlike the other comparison videos where I use the diameter, in this video I used the radius.

Music:
You're not wrong - roljui
Gangsta choir descends - Doug Maxwell / Media Right Productions

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