“Guys?” Hank looked round another crater. Surely they can’t have left without him. Mission control wouldn’t allow it, would they? What if no one wanted him to come back? What if this was part of the mission? No, he’s just got lost. But what if they had to leave and couldn’t find him? What if he dozed off and missed the exit window, and they had to make a difficult decision? I should stay more alert when on the moon, he thought to himself. He bounded over another horizon, nebulae of grey powder swirling in his footprints. “Guys?” no one here either. His search slowed, and after a while he finally came to a silent standstill. He dropped his head, shed a small tear. It was getting late, and he didn’t have much air left. He lowered himself onto a dusty ridge, sat up, and watched the Earth rise.