Looming monstrously above the lunar horizon was the thin crescent of Earth, embracing the darkened nightside of the planet.

The mountains that had been so prominent just before landing had mysteriously disappeared, hidden from sight below the steeply curving lunar horizon.

It formed a protected wall of sorts, one that snaked off toward the deceptively near lunar horizon.

Borman saw the Earth emerging from behind the lunar horizon and called in excitement to the others, taking a black-and-white photo as he did so.

As they flew above the pockmarked surface, the Earth once more slipped back below the strangely foreshortened lunar horizon.

She just popped up over the lunar horizon.

At the top of that arch is another arch which is level with our perspective, and through it we are looking out over a lunar horizon.

At any height above the Moon, you could always see the lunar horizon, sharp and toothy against black space and gently curved.

Hanging on to its rear fender, Dan swept his gaze around the lunar horizon.

A relay signal, it showed the colossal alien machine as it came into sight over a lunar horizon.