Stellar dynamics

Stellar dynamics is when we try to understand how stars move and interact with each other using math and physics. Just like how we can't see the wind, we can't see how stars are moving, but we can use tools to figure it out!

Imagine you are playing with a bunch of marbles. If you put them in a bowl and move the bowl around, the marbles will move around too. But if you add more marbles or change their positions, the movement of them all will be different. This is the same for stars.

There are millions of stars in our galaxy, the Milky Way, and they all move around each other. Some are closer to each other, while others are far away. And just like the marbles, the positions and masses of the stars affect how they move.

Scientists use math to create models of how the stars are moving in the galaxy. They take into account how gravity (the force that pulls things towards each other) affects the stars, as well as other factors. These models help us understand why groups of stars move in certain ways and how they eventually form galaxies.

Overall, stellar dynamics is a way for scientists to study how all the stars in our universe move and interact with each other. It's like playing with marbles, but on a much larger and more complex scale!