earthward

The black cloud would float earthward, and Heno would stop and have a word with the mother and the boy.

Something moved down on the river bank and in that same instant the box hurtled earthward as might a spear.

He saw it open and sail earthward and then some one on the ground waved a white handkerchief.

So he eased his plane earthward, gliding lower and lower, and waiting for the flare.