Only about a fourth of the total R.Force was being developed, and the _Astronef_ was dropping swiftly, but steadily.
Redgrave, who was in the conning-tower controlling the engines, beckoned to Zaidie and said: "Shall we go on ?" "Yes," she said.

"Now we've got as far as this I want to see what Jupiter is like, and where you are not afraid to go, I'll go." "If I'm afraid at all it's only because you are with me, Zaidie," he replied, "but I've only got a fourth of the power turned on yet, so there's plenty of margin." The _Astronef_, therefore, continued to sink through what seemed to be a fathomless ocean of whirling, blazing clouds, and the internal temperature went on rising slowly but steadily.

Their guests, without showing the slightest sign of any emotion, walked about the upper deck now, singly and now together, apparently absorbed by the strange scene about them.
At length, after they had been dropping for some five hours by _Astronef_ time, one of them, uttering a sharp exclamation, pointed to an enormous rift about fifty miles away.

A dull, red glare was streaming up out of it.

The next moment the brown cloud-floor beneath them seemed to split up into enormous wreaths of vapour, which whirled up on all sides of them, and a few minutes later they caught their first glimpse of the true surface of Jupiter.
It lay, as nearly as they could judge, some two thousand miles beneath them, a distance which the telescopes reduced to less than twenty; and they saw for a few moments the world that was in the making.