NEW YORK A new study has revealed that the nocturnal Bogong moth , native to Australia , uses the stars in the night sky as a navigational compass during its annual long-distance migration . Each year, when temperatures begin to rise, these tiny moths, whose brains are smaller than a grain of rice, fly nearly 1,000 kilometers to reach the cool caves of the Australian Alps. There, they rest before returning home to breed and die. While birds are known to navigate by starlight, this is the first