CHAPTER XX

A week later they crossed the path of Jupiter, but the giant was invisible, far away on the other side of the Sun. Redgrave laid his course so as to avail himself to the utmost of the "pull" of the planets without going near enough to them to be compelled to exert too much of the priceless R. Force, which the indicators showed to be running perilously low. Between the orbits of Jupiter and Mars they made a most valuable economy by landing on Ceres, one of the largest of the asteroids, and travelling about fifty mil…