miles-in-diameter

Updated: May 1, 2025

Frank was not very concerned with such issues just then, for there was an impression that was overpowering: The slightness of the intrusion of his kind on a two thousand-something miles-in-diameter globe of incredible desert, overlapping ring-walls, craters centered in radiating streaks of white ash, mountain ranges that sank gradually into dust, which once, two billion years ago, after probable ejection from volcanoes, had no doubt floated in a then palpable atmosphere.

Raymond Z. Gallun - The Planet Strappers