Stellar surveys involve the systematic observation and cataloging of stars in our galaxy and beyond. These surveys aim to study the properties of stars, such as their brightness, temperature, size, composition, and distance from Earth. By conducting large-scale surveys of stars, astronomers can gain insights into the formation and evolution of galaxies, the distribution of stars in the Milky Way, and the prevalence of different types of stars in the universe. Stellar surveys play a crucial role in advancing our understanding of the cosmos and are carried out using ground-based telescopes as well as space-based observatories like the Hubble Space Telescope and the European Space Agency's Gaia mission.