This was a spherical vessel, 180 feet in diameter, equipped only with an interplanetary type space-drive.

And yet such viewscreens of the space surveillance system as were working revealed a clear image of the spherical vessel.

Powerful energy screens protected the spherical vessels from any attack.

Barton's design called for a spherical vessel, as a sphere is the best possible shape for resisting high pressure.

Rhombur held on as the spherical vessel bounced and careened.

Their spherical vessels are nothing, of course.

It consists of a spherical vessel with a long downward-pointing neck.

It was a small spherical vessel of the Planet series, measuring only 50 meters in diameter.

Barton's design called for a spherical vessel, which was the strongest possible shape for resisting high pressure.

Replacing the monster was a squadron of fast, spherical vessels - those he had glimpsed just before leaving the fleet.