I simply make another perfect sphere of exactly the right diameter.

Another shape took being, a perfect sphere otherwise like the last.

An item of particular interest is a large, perfect sphere in the cargo hold.

If the Earth were a perfect sphere, there would be no precession.

When small and floating, as in clouds, they form nearly perfect spheres.

He pulled himself into a perfect sphere and rolled away.

Rolling so fast, it looked more than ever like a perfect sphere.

There in the center was a perfect sphere of Phazite.

A rock rather than a chunk of iron, it was almost a perfect sphere.

Given the water pressure at these depths, the ideal shape would be a perfect sphere.