Question

What is the origin of black hole and what is the extending speed of universe? ​

Answer 1

Origin of a black hole is a dying neutron star

.

.

.

.

the extending speed of universe is 71.9 kilometers (44.7 miles) per second per megaparsec (one megaparsec equals about 3.3 million light-years).

Answer 2

Answer:

Albert Einstein first predicted black holes in 1916 with his general theory of relativity. The term "black hole" was coined in 1967 by American astronomer John Wheeler, and the first one was discovered in 1971. There are three types: stellar black holes, supermassive black holes and intermediate black holes.

1 megaparsec in distance means it's racing away at 68 km/s.