How do dung beetles steer by the stars?

Picture a dung beetle — shiny black armor, spindly legs — rolling a ball of poop backward across the sand. It's dinnertime and bedroom rolled into one, so the beetle wants to move FAST and STRAIGHT, away from competitors. But here's the thing: the beetle is walking backward, head down, ball blocking its view. How does it not just… circle back to where it started?
The beetle uses the sky as a compass. Not the sun — too bright to stare at while you're hauling cargo. The beetle looks UP, reads the pattern of light, and locks onto it like a sailor steering by the North Star. As long as that pattern stays in the same spot overhead, the beetle knows it's walking straight.
