Okay kiddo, so Beta Centauri is actually a star in space, millions and millions of miles away from here on Earth. It's part of a bigger constellation called Centaurus and it's one of the brightest stars in the sky.
Now, when astronomers study stars like Beta Centauri, they like to measure something called their "beta value" or "beta coefficient." This is a way of figuring out how much the star's brightness changes over time.
Here's an example: imagine you have a toy that changes colors when you press a button. If you press the button really fast, the colors change quickly, right? But if you press the button slower, the colors change slower. That's kind of how beta value works with stars like Beta Centauri.
Scientists have discovered that Beta Centauri's beta value is pretty high compared to other stars, which means that its brightness changes a lot over time. This can happen for a few different reasons, like if the star has a companion that's pulling on it or if there are big explosions happening on its surface.
Overall, Beta Centauri is a really interesting star to study and scientists are still learning new things about it all the time!