How Big Is The Universe Explained In A Way You Will Easily Understand

How big is the Universe explained in a way you will easily understand

The Royal Observatory of Greenwich, England, has crafted three simple animations to explain three very complex things: What's inside a black hole, how do we know the age of the sun -- did you know the Sun weighs 4,000 trillion trillion hippopotamuses? -- and how big is the Universe.

What's inside a black hole?

How Do We Know How Old The Sun Is?

How Big Is The Universe?