Deriving the Schwarzschild solution

The Schwarzschild solution is a set of equations that scientists use to explain what happens when something, like a star, has a lot of mass. The equations tell us that the star will cause space and time around it to curve, like a bowl. They also tell us that if the star is big enough, the curvature is so strong that not even light can escape. This is called a black hole! To get the solution, scientists have to solve a lot of complicated equations. It's kind of like doing a very hard math problem with a lot of numbers.