They found that the tiny world possessed a breathable atmosphere and a fluid resembling water, but nearly as dense as mercury.
By now the air was breathable, and he could see into the deserted Gulch.
But they are very handy things when you walk abroad on a world which has no breathable atmosphere.
She spoke, now, with her helmet face-window open, for there was breathable air around them.
Kroger says the air is breathable, but thin, and it has too much dust in it to be any fun to inhale.
But there would be breathable amounts for many thousands of centuries yet to come.
Growing plants kept the air in their greenhouse fresh and breathable by photosynthesis.
I know now that by some vagary of chance—of fate if you will—I had struck a surface area where breathable air still remained.
There, attached flasks of breathable atmosphere fill it out in a minute.
The air was hot, but breathable at times, and he filled his lungs till he had difficulty in keeping his body down below.