"There must be something nice under all those lovely colours." Redgrave checked the R.Force and the _Astronef_ fell obliquely across the pole towards the equator.

As they approached the luminous clouds Redgrave turned it on again, and they sank slowly through a glowing mist of innumerable colours, until the surface of Ganymede came into plain view about ten miles below them.
What they saw then was the strangest sight they had beheld since they had left the Earth.

As far as their eyes could reach the surface of the Ganymede was covered with vast orderly patches, mostly rectangular, of what they at first took for ice, but which they soon found to be a something that was self-illuminating.
"Glorified hot-houses, as I'm alive," exclaimed Redgrave.

"Whole cities under glass, fields, too, and lit by electricity or something very like it.

Zaidie, we shall find human beings down there." "Well, if we do I hope they won't be like the half-human things we found on Mars! But isn't it all just lovely! Only there doesn't seem to be anything outside the cities, at least nothing but bare, flat ground with a few rugged mountains here and there.