Frontier Fields is a research area in astronomy that focuses on studying some of the most distant and faint galaxies in the universe by using the gravitational lensing effect of massive galaxy clusters. Through the analysis of deep observations from telescopes like the Hubble Space Telescope, researchers are able to study the evolution of galaxies, the distribution of dark matter, and the formation of galaxy clusters in the early universe. The Frontier Fields project aims to push the boundaries of our understanding of the universe and shed light on some of its most mysterious phenomena.