And there's Ganymede coming up after him, and Europa behind him.
Talk about eclipses! they must be about as common here as thunderstorms are with us." "We don't have a thunderstorm every day--at least not at home," corrected Zaidie, "but on Jupiter they must have two or three eclipses every day.

Meanwhile, there goes Jupiter himself.

What a difference distance makes! This little thing is only a trifle larger than our Moon, and it's hiding everything else." As she was speaking the full-orbed disc of Calisto, measuring nearly three thousand miles across, swept between them and the planet.

It shone with a clear, somewhat reddish light like that of Mars.

The _Astronef_ was feeling his attraction strongly, and Redgrave went to the levers and turned on about a fifth of the R.Force to avoid too sudden contact with it.
"Another dead world!" said Redgrave, as the surface of Calisto revolved swiftly beneath them, "or at any rate a dying one.