We released results that showed, for the first time, evidence for the presence of a stochastic gravitational wave background permeating the Universe at nanohertz frequencies. Here's a great video summarizing our work with this dataset, and the press conference at NSF headquarters announcing our results. In addition to leading the search for anisotropy in the gravitational wave background, I also developed the noise analysis framework for the timing analyses, led the simulations team in the search for the isotropic background, co-led the investigation of the monopole, and was one of the people who wrote the paper showing evidence for the isotropic background.