Eighth Moon of Gorgus
From Tardis Wiki, the free Doctor Who reference
The Eighth Moon of Gorgus was one of thirteen moons orbiting the planet Gorgus. It had a gravity four times that of Earth. Despite having no atmosphere, the air contained oxygen, and some primitive species existed on the moons surface. The Kryllians used a distress signal to draw unsuspecting ships towards the moon, where they would be overcome by the intense gravity and crash, leaving their cargo and crew defenceless. The Kryllians then sold these crew as slaves to the Vogans. (COMIC: The Wreckers)