Invariable plane
When you draw a circle, it's like drawing a flat, round shape. Now, imagine putting a stick through the middle of the circle, from one side to the other. The stick would make the circle stand up and look like a ball.
But now, imagine that you have lots of circles stacked on top of each other, all with sticks through them. If you look closely, you'll notice that all the sticks line up with each other. That's because they're all on the same line, or "plane," and it doesn't change no matter how many circles you stack up.
This same idea can be applied to objects in space, like planets and stars. Scientists have found that all the planets in our solar system, as well as some other things like asteroids and comets, all rotate around in a flat plane. We call it the "invariable plane" because it doesn't change no matter what. It's like a huge disk in space with all the objects going around in circles on the same level.
This is important because it helps us understand how the solar system formed and how it works. We can study the invariable plane to learn more about planets and their movements, and even find new things orbiting around the sun that we might not have noticed otherwise.
But now, imagine that you have lots of circles stacked on top of each other, all with sticks through them. If you look closely, you'll notice that all the sticks line up with each other. That's because they're all on the same line, or "plane," and it doesn't change no matter how many circles you stack up.
This same idea can be applied to objects in space, like planets and stars. Scientists have found that all the planets in our solar system, as well as some other things like asteroids and comets, all rotate around in a flat plane. We call it the "invariable plane" because it doesn't change no matter what. It's like a huge disk in space with all the objects going around in circles on the same level.
This is important because it helps us understand how the solar system formed and how it works. We can study the invariable plane to learn more about planets and their movements, and even find new things orbiting around the sun that we might not have noticed otherwise.