Circumstellar disc

Around a brand new star, there's a giant, flat, spinning ring of dust and gas. It looks a bit like a giant donut or a frisbee! This is called a circumstellar disc.

It's made of tiny bits of rock and ice, like the stuff that makes up planets. These discs are super important because they are like nurseries for baby planets. They are often much bigger than our whole solar system, stretching out for billions of miles!

When a star is born, it doesn't just pop into existence all by itself. It forms from a giant cloud of gas and dust in space. As this cloud collapses and gets smaller, it starts to spin faster, just like an ice skater pulling their arms in.

Most of the stuff spins into a flat disc around the new star. This disc is the birthplace of planets, moons, and even asteroids. It’s like the leftover ingredients from making a star!

These cosmic donuts are super important because they are where planets are made! The dust and gas in the disc bump into each other and stick together. Over millions of years, these little clumps grow bigger and bigger, eventually becoming planets like Earth or Mars.

Scientists study these discs to understand how our own solar system got started. It’s like looking at a baby picture of our cosmic home!

Inside the disc, the tiny dust grains start to clump together. Imagine tiny snowflakes sticking to each other. These clumps get bigger, forming pebbles, then rocks, and then giant boulders.

Eventually, these grow into planetesimals, which are like baby planets. Gravity pulls these together, and if they get big enough, they become full-fledged planets! Some discs have rings and gaps, showing where planets are already forming and clearing out their paths.