CANDELS (Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey) is a large multi-cycle treasury program on the Hubble Space Telescope that aims to explore the formation and evolution of galaxies in the early Universe. The survey covers a wide range of wavelengths, from ultraviolet to near-infrared, allowing for a comprehensive study of galaxies across cosmic time. CANDELS has provided valuable insights into the growth of galaxies, the formation of stars, and the mechanisms driving galaxy evolution. Scientists use the data from CANDELS to study a variety of topics such as galaxy morphology, star formation rates, and the role of dark matter in galaxy formation.