Well, maybe they like drift through space on... on solar winds, like spores, and...whatever planet they land on first, the female leaves a pheromone trail for the males to follow it, ind it, breed, et cetera.
多分 奴らは太陽風に乗って 宇宙を漂ってるんだ そして惑星に降りると メスはフェロモンでオスを呼ぶ