"They're called Ships Graveyards," Thompson said, staring at the screen. "At least, that's what the smugglers call them anyway, dunno if there's an official name. No-one's absolutely sure what they are, heard everything from some bizarre anomaly to some leftover weapon from a war to some kind of sentient creature. They feed off the energy of a ship, doesn't matter at long distance but there's a point where the harder you try to escape the quicker you're drained. You can imagine dying as your life support slowly fails is probably a pretty horrible experience."