A pale disk, barely visible, covers a quarter of the sky.

Its visible disk is about one tenth that of the sun seen from Earth.

They were far enough away that Luna was the brightest star in the sky, one with its circular disk just visible.

It looks natural enough, she decided, as the sun became a visible disk through the overcast.

And it was no longer a point of light; it had begun to show a clearly visible disk.

Surrounding that visible disk is a cloud of hydrogen gas extending another 25,000 light-years.

The sun had risen much earlier but it was a barely visible white disk in a leaden sky.

The idea is to use the wavefield on the visible disk to learn about active regions on the far side of the Sun.

Hanuman looked uncertain; he remained at the visible stepping disk, the far one.

She pointed to the red disk just visible above the hotel's unfinished facade.