Why does an eclipse happen?
Shadow Dance
Why does an eclipse happen?
You look up one afternoon and the Sun — the giant glowing ball that lights up every single day of your life — is being eaten by a dark circle. The sky turns twilight gray. Birds go quiet. It's eerie, it's beautiful, and it's called an eclipse. But what's actually happening up there?
Here's the setup: You're standing on Earth, which is spinning through space. The Sun — a star 93 million miles away — blasts light in every direction. That light travels across empty space and hits your planet, making it daytime wherever you happen to be standing. Simple enough. But Earth isn't alone out here.
