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Category: Physics

how long to fall through the earth

How Long Would It Take To Fall Through The Earth?

The answer is 42. Yes, I am serious.

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how we know black hole exists

How Do We Know Black Holes Exist?

You’ve probably heard about black hole as a space-time region that exhibits such strong gravitational pull that no particle and radiation can escape from inside it. So, if nothing can […]

The Unreasonable Efficiency of Black Holes

The Unreasonable Efficiency Of Black Holes

According to Einstein’s famous equation E=mc^2, anything with mass has a huge amount of energy. Well, there are basically three ways to generate energy: chemical reactions, nuclear reactions, and gravitational […]