Question

What is Black hole?
Is it dangerous for earth?
What is the diameter of a Black hole? ​

Answer 1

Answer:

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.

A black hole is most likely described to be a result of a dying star, or as it might be called “star dust”; black holes are one of the most dangerous objects, as they can be illustrated as giant cosmic vacuum cleaners.

It has a diameter of about 78 billion miles. For perspective, that's about 40% the size of our solar system, according to some estimates. And it's estimated to be about 21 billion times the mass of our sun. So there you have it, black holes can be millions of times larger than suns and planets or as small as a city.

Answer 2

Explanation:

What is Black Hole -

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.

Is it dengerous for earth -

A black hole is most likely described to be a result of a dying star, or as it might be called “star dust”; black holes are one of the most dangerous objects, as they can be illustrated as giant cosmic vacuum cleaners

What is the diameter of a Black hole? -

It has a diameter of about 78 billion miles. For perspective, that's about 40% the size of our solar system, according to some estimates. And it's estimated to be about 21 billion times the mass of our sun. So there you have it, black holes can be millions of times larger than suns and planets or as small as a city.