Physics: At the Heart of Everything

jtotheizzoe:

It’s one of those classic questions that have tickled the human brain for ages. Let’s take something whose scale we have no way of reconciling, like the number of stars, and compare it to something else whose scale is completely neuron-warping, like the number of grains of sand on every beach.

Which is bigger?

This likely isn’t the first time you’ve heard this mind-bender. So I won’t be spoiling it by telling you that stars win … big-time. The universe is a very large place.

But we don’t have to go big to beat the stars. You’ll never guess how little of a certain common liquid it takes to beat both of those numbers … I’ll leave that to Robert.