With a fresh project ready, it's time to add the first object — and Eon's building a brand-new star. But first, his dad asks a deceptively deep question: what is the basic shape of a planet or a star?

Start with a primitive

In 3D modeling you don't sculpt from nothing — you start by adding a basic shape, often called a primitive (a ball, a cube, a cylinder). Then you refine it.

For a planet or star, the right starting shape is the sphere — a perfectly round 3D ball. Almost every world you'll ever model begins here.

Why are planets and stars round?

Eon's answer is wonderfully sharp — a star is "like a round star, but so big it can't really be round, it's a little bumpy." He's onto something real:

Big space objects are round because their own gravity pulls everything toward the center, squeezing them into a sphere. But Eon's right — up close they're not perfectly smooth. Stars churn and bubble; planets have mountains. Round overall, bumpy in the details.

Simple shape, then refine

This is the heart of modeling (and a lot of life): start simple, then add detail. A sphere becomes a planet once you add mountains, color, and texture. The sphere is just the honest beginning.

Try it

Look at the Moon, a basketball, and an orange. All spheres — but each has its own bumps and texture. That's exactly how a modeler thinks: round base first, character second.