As they passed under it the whole scene suddenly changed. The rings vanished. Overhead was an arch of brilliant light a hundred miles thick, spanning the whole of the visible heavens. Below lay the sunlit surface of Saturn divided into light and dark bands of enormous breadth.
The band immediately below them was of a brilliant silver-grey, very much like the central zone of Jupiter. North of this on the one side stretched the long shadow of the rings, and southward other bands of alternating white and gold and deep purple succeeded each other till they were lost in the curvature of the vast planet. The poles were of course invisible since the Astronef was now too near the surface; but on their approach they had seen unmistakable evidence of snow and ice.
As soon as they were exactly under the Ring-arch, Redgrave shut off the R. Force, and, somewhat to their astonishment, the Astronef began to revolve slowly on its axis, giving them the idea that the Saturnian System was revolving round them. The arch seemed to sink beneath their feet while the belts of the planet rose above them.
"What on earth is the matter?" said Zaidie. "Everything has gone upside down."
"Which shows," replied Redgrave, "that as soon as the Astronef became neutral the rings pulled harder than the planet, I suppose because we're so near to them, and, instead of falling on to Saturn, we shall have to push up at him."
"Oh yes, I see that," said Zaidie, "but after all it does look a little bit bewildering, doesn't it, to be on your feet one minute and on your head the next?"
"It is, rather; but you ought to be getting accustomed to that sort of thing now. In a few minutes neither you, nor I, nor anything else will have any weight. We shall be just between the attraction of the rings and Saturn, so you'd better go and sit down, for if you were to give a bit of an extra spring in walking you might be knocking that pretty head of yours against the roof," said Redgrave, as he went to turn the R. Force on to the edge of the rings.
A vast sea of silver cloud seemed now to descend upon them. Then they entered it, and for nearly half an hour the Astronef was totally enveloped in a sea of pearl-grey luminous mist.
"Atmosphere!" said Redgrave, as he went to the conning-tower and signalled to Murgatroyd to start the propellers. They continued to rise and the mist began to drift past them in patches, showing that the propellers were driving them ahead.
They now rose swiftly towards the surface of the planet. The cloud-wrack got thinner and thinner, and presently they found themselves floating in a clear atmosphere between two seas of cloud, the one above them being much less dense than the one below.