What are the requirements for a black hole to occur?

In theory, any mass can be compressed sufficiently to form a black hole. The only requirement is that its physical size is less than the Schwarzschild radius. For example, our Sun would become a black hole if its mass was contained within a sphere about 2.5 km across.

How much matter does it take to make a black hole?

In an early speculation, Stephen Hawking conjectured that a black hole would not form with a mass below about 10−8 kg (roughly the Planck mass). To make a black hole, one must concentrate mass or energy sufficiently that the escape velocity from the region in which it is concentrated exceeds the speed of light.

How small do you need to squish the Earth in order to make it into a black hole?

If we plug in the Earth’s mass, we find a radius of about 4 millimeters. In other words, if we could somehow squish the Earth until it was a ball about the size of a dime, it would turn into a black hole: no light would escape from its surface.

What do we mean by the singularity of a black hole?

The singularity at the center of a black hole is the ultimate no man’s land: a place where matter is compressed down to an infinitely tiny point, and all conceptions of time and space completely break down.

How small can you compress the Earth?

The Schwarzschild radius for the Earth is approximately one inch, meaning that you could squish the entire mass of the Earth into a sphere the size of a basketball and still not have a black hole: light emitted from that mass can still escape the intense gravitational pull.

What is singularity in black hole?

The singularity at the center of a black hole is the ultimate no man’s land: a place where matter is compressed down to an infinitely tiny point, and all conceptions of time and space completely break down. And it doesn’t really exist. Something has to replace the singularity, but we’re not exactly sure what.

What is a point of singularity?

A singularity means a point where some property is infinite. For example, at the center of a black hole, according to classical theory, the density is infinite (because a finite mass is compressed to a zero volume). Hence it is a singularity.

https://www.youtube.com/watch?v=n2ah17xc_Zg