What are huge families of stars that look like hazy patches of faint light in the night sky?

Huge families of stars that appear as hazy patches of faint light in the night sky are known as star clusters or nebulae. Star clusters, like globular clusters, contain thousands to millions of stars bound by gravity, while nebulae are vast clouds of gas and dust, often where new stars are born. The Milky Way galaxy contains several well-known examples, such as the Pleiades cluster and the Orion Nebula. These celestial formations can be observed with the naked eye and are often studied for their role in stellar evolution and the dynamics of galaxies.