The hazy space within the denser cloud was vast.

But eddying blasts swirled round them from every side, and the snow flowed down in ever denser clouds.

Below these ammonia ice clouds, denser clouds made of ammonium hydrosulfide or ammonium sulfide (between 1-2 bar) and water (3-7 bar) are thought to exist.

Ammonia concentration is higher in zones, which leads to the appearance of denser clouds of ammonia ice at higher altitudes, which in turn leads to their lighter color.

And ahead I could see denser clouds of pale gray smoke, coiling and boiling like a tangle of lazy serpents.

Like stars, they presumably form when an interstellar cloud breaks up and the fragments contract into smaller, denser clouds, heating up in the process.

Such an interpretation is supported by the denser and higher clouds in the collars.

It is to descend by parachute through denser, hotter, more turbulent clouds, where winds blow fiercely and lightning flashes menacingly.

Drifts of dust, loose planets, burnt-out suns lay in menace behind the denser clouds.

The encounter with the denser cloud could come within 50,000 years.