How to get smooth curves

I just downloaded Unity3D after watching a couple of tutorials. I’m just trying out some basics and run into in issue immediately.
When I add a sphere to my scene, apply a metal surface etc. The edges of the sphere are not smooth. See screenshot.
Anyone any ideas what I’m doing wrong and more important how to get it right?

[20378-schermafbeelding+2014-01-08+om+16.02.48.png|20378]

Thanks in advance.

Unity, just like every other 3d software program, models objects as surfaces made of triangles. The illusion of curved surfaces comes from having surfaces composed of many small triangles, so that each straight plane is very short, and the angle between them is very shallow, appearing to be one continuous surface.

To create a more “smooth” surface, use a modelling program and increase the number of triangular subdivisions used in the mesh. However, note that doing so will have a negative impact on performance.

Welcome to the wonderful world of Polygons. If you use the Unity primitives you can’t specify the level of detail. But you can use blender or any other 3D app to make your own assets that are smoother.