What is a mass of gases dust particles and stars in space?

A mass of gases, dust particles, and stars in space is commonly referred to as a nebula. Nebulae are vast clouds found in interstellar space, and they can serve as the birthplace of stars and planetary systems. They contain a mixture of hydrogen, helium, and other ionized gases, along with dust that can clump together under gravity to form new celestial bodies. Some nebulae are also remnants of dead or dying stars, such as supernova remnants.