Darwin Lagrangian is a type of mathematical equation that helps scientists understand how different particles and forces interact with each other in space. They are named after the famous scientist Charles Darwin, who first came up with the equation.
When scientists study how things move in space, like stars and planets, they can use the Darwin Lagrangian equation to see how each particle's movement changes over time. They can also use it to see how the gravitational force from different particles affects the movement of other particles. For example, the Newtonian formula of gravity shows how two particles are attracted to each other, but the Darwin Lagrangian equation can help scientists understand how the force of gravity changes if more particles are added.
In summary, Darwin Lagrangian is a way to better understand how things move and interact in space by looking at the forces and particles that are moving around.