Asteroid Polymele May Have Its Own Natural Satellite, Say Astronomers on NASA's Lucy Mission

On its way to the space rocks Trojans, NASA's Lucy probe observed its smallest asteroid target named Polymele, which was expected to pass in front of a star. As the asteroid passed, it blocked the star briefly allowing astronomers to observe the star blink along with another object. Located some 200km from Polymele, astronomers think that is likely the asteroid's own ...

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