Night-sky

I was riding slowly up a low, steep hill, about ten miles from Newmarket (I think the two or three houses are dignified by the name of Rockville), when I saw the indistinct forms of several horses, and the taller figure of one mounted man, standing out against the clear night-sky on the very crest of the ascent.

Source: wiktionary

Or that his interest in astronomy was not deepened by the spectacle of a night-sky in Arabia?

Source: wiktionary

It was not visible in the grey night-sky, and was still for a minute;

Source: wiktionary