Article says that a black hole the mass of the earth would be the size of a ping-ping ball. Another that had the mass of the sun would be about 2 miles in diameter.
Amazing!
“...ping-pong ball...”
Based on Hawking Radiation all black holes are losing mass over time although the process is very slow. An ping pong sized black would take 1.815951e+58 seconds to evaporate.
It is. Our impression of “solid” is the result of the Pauli exclusion principle, that no two electrons can share the same state. But atoms are mostly empty space, mostly “nothing.” It takes tremendous force, and gravity does that, to cause the space inside an atom to be compressed.
Another thing is that on paper, that ping-pong ball or 2 mile sun-mass black hole is the event horizon, and not the size of the mass. If you get that close, you can never leave.