BBH 75

BBH 75 is a designation given to a Herbig-Haro object. Herbig-Haro objects (often abbreviated HH objects) are bright nebulae associated with newly born stars. They are formed when gas ejected by these young stars collides with clouds of gas and dust at high speeds, creating shock waves. These shock waves heat the gas, causing it to become ionized and emit light, which is observed as these distinctive nebulae.

The "BBH" prefix in the designation refers to Bohigas, Bopp, and Harold, astronomers who have contributed to the study and identification of Herbig-Haro objects. The number following the prefix, in this case "75," is a specific identifier for a particular Herbig-Haro object within the catalog. Therefore, BBH 75 is one specific instance of a Herbig-Haro object that has been cataloged. Its exact characteristics, such as its location, size, and velocity, would require further detailed astronomical study to determine.