This causes the material to become very dense in parts, to rotate rapidly, and finally to collapse into smaller, opaque spheres as large as our solar system.

The room was very large and dominated by an opaque sphere about fifteen meters in diameter.

Agamemnon's actual brain was inside the opaque metal-walled sphere, from which he controlled the gladiator-form.

This was a large room designed primarily to house an opaque sphere about fifteen meters in diameter.

Then all at once the morphing mass contracted, straining violently to compress itself into a tight opaque sphere.

This large room housed an opaque sphere about fifteen meters in diameter.

Room F-12 was a large facility that housed an opaque sphere about fifteen meters in diameter.

And about them formed an opaque sphere that cut off all ex- ternal light and sound.

Inside the opaque sphere Creation's strange engines were speeding ever-faster toward a shadowy destination.

Before Copernicus, most people thought the night sky was a region apart from the natural world, a transcendent place whose glory lay behind an opaque, light-studded sphere.