95% of the universe is dark: dark matter and dark energy. While we cannot observe them directly, an incredible amount of information about the dark universe is encoded in the shapes, positions, and motions of galaxies. The European Space Agency's Euclid telescope (with contributions from NASA), launched in July 2023, is the first telescope purpose built to understand the dark universe. Euclid will survey 2 billion galaxies, generating a huge data set that will transform astrophysics using innovative AI/machine learning tools. Euclid's first release of survey data will be in March 2025.