Stellar nurseries are vast clouds of gas and dust in space where new stars are born. These regions, often called molecular clouds, contain the necessary materials for star formation, including hydrogen and helium. When parts of these clouds collapse under their own gravity, they create dense cores that eventually ignite nuclear fusion, leading to the birth of a new star. These nurseries are often found in areas of the universe known as star-forming regions. Famous examples include the Orion Nebula and the Carina Nebula. As stars form, they can also create new elements and influence their surroundings, contributing to the evolution of galaxies.