You might not solve Schrödinger’s equation or calculate the trajectory of a rocket. But every time you ask "Why?" —why the sky is blue, why the ice is slippery, why time slows down when you run fast—you are doing physics.

So next time you look up at the night sky, remember: You are not just looking at the stars. Because of physics, you are made of the stars. And that is the most beautiful equation of all.

The answer is no. It would roll forever.

Physics: The Silent Engine Behind Everything You Love