Where would a nebula be found?

A nebula is a vast interstellar cloud of dust, hydrogen, helium and other ionized gases. Nebulae are the birthplaces of stars and are often found in the spiral arms of galaxies. They can be found in a variety of shapes and sizes, and are often associated with star formation and the death of stars. Some nebulae are visible to the naked eye, such as the Orion Nebula and the Lagoon Nebula, while others can only be seen with a telescope.