The fire-bright point source of Alpha Centauri in the upper screen became a perceptible and growing disk.

There should have been a Sol-type sun relatively near, probably with a perceptible disk.

It was a yellow sun, a Sol-type star with a barely perceptible disk.

You've got a perceptible disk, seen from here.

The gas-giant planet outward from the sun was a perceptible disk instead of a diffuse glow.

In two daysAlphin , the sun, had dwindled until it was merely the brightest of the stars, with a barely perceptible disk.

Another star was passing sufficiently near at the time that it showed a perceptible disk... in a stopped-down viewscreen, because no human eye could directly confront that electric cerulean intensity.

A quick glimpse at the fire-bright point source of Alpha Centauri in the upper screen showed a perceptible disk, swelling as he watched.

More time passed, during which a blue-white star separated itself from the infinitely distant firmament and began to show a perceptible disk.

Ten hours after Keller released them, they had covered five hundred eighty-eight thousand thousand miles and the sun still showed as a perceptible disk.