(ORDO NEWS) — In order for the Sun to become a black hole , it must be compressed to the size of a small city while maintaining mass.
Only this will never happen, since the Sun’s own mass is not enough to ensure such compression; a star must be at least 2.2 times the size of the Sun to stand a chance of becoming a black hole.
In order for our Earth to become a black hole – in classical physics, hypothetically, any object can become a black hole – it must be compressed to the size of a peanut in a shell. However, as with the Sun, this will never pass.
Can, say, an atom become a black hole?
In classical general relativity, there is no minimum mass that a body “planning” to become a black hole must have . However, in the “semi-classical” picture of the world order, that is, general relativity + quantum field theory, the least possible black hole has a mass that corresponds to the Planck mass (2.176434(24)*10^-8 kg [0.00000001 kg]).
The mass of an atom of uranium – the heaviest of the elements existing on Earth – is only 3.952 * 10^-22 kg [0.0000000000000000000001 kg], which is significantly less than the Planck mass. This suggests that an atom cannot be a black hole, even in theory.
Technical Notes:
The minimum allowable mass of a black hole (the Planck mass) is related to the event horizon of the black hole. The event horizon is thought to encode all the information within a black hole on the surface of the black hole itself, forming a surface of “patches” each corresponding to 1 bit of data.
Thus, the smallest black hole that can appear in theory is a 1-bit black hole with a mass proportional to the Planck mass, which is about 22 micrograms.
It is worth noting that human knowledge of quantum physics is rather poor, therefore, according to some scientists, it is likely that the smallest possible black hole will have a mass that will be less than the Planck mass.
—
Online:
Contact us: [email protected]
Our Standards, Terms of Use: Standard Terms And Conditions.