A big warm circle of yellow light opened in her hull.

Silently the circle opened to let them out, heading north.

First a circle, then a full-sized disk opened ahead of them.

The circle of men opened, and a man in an officer's uniform came through.

The circle then opens as a gate to allow the bridal couple to pass through.

A circle opened in the gray-clouded dome overhead, revealing blue sky.

The circle of interested spectators opened for the lawyer and the detective.

The circle opened and Mark stepped into the opening.

A black circle opened at the base of the mountain.

The circle opened and made space for them.