I'm sorry, but I'm not aware of the word "rebuläe" in Latin or any other language. It doesn't appear to be a commonly used word or term in the context of astronomy, either. However, the word "stellae" in Latin refers to stars, and it's possible that this is the word you're thinking of. Before the development of modern astronomy, all objects in the night sky that were not sharp points of light, including planets and other celestial bodies, were often referred to as "wandering stars" or "planets." It wasn't until the development of more advanced telescopes and astronomical instruments that these objects could be studied and identified more accurately.