Learn how Hubble is measuring the expansion rate of the Universe in this new explainer from NASA's Goddard Space Flight Center. Credit: NASA's Goddard Space Flight Center Producer & Director: James Leigh Editor: Lucy Lund Director of Photography: James Ball Additional Editing & Photography: Matthew Duncan Executive Producers: James Leigh & Matthew Duncan Production & Post: Origin Films Video Credit: Hubble Space Telescope Animation Credit: M. Kornmesser (ESA/Hubble) Dark Energy Expansion Graph Credit: NASA's Goddard Space Flight Center Dark Energy Expansion Animation Credit: NASA's Goddard Space Flight Center Conceptual Image Lab Hubble Extreme Deep Field Fly Through Credit: NASA, ESA, and F. Summers, L. Frattare, T. Davis, Z. Levay, and G. Bacon (Viz3D Team, STScI) James Webb Space Telescope Animations Credit: NASA's Goddard Space Flight Center Conceptual Image Lab Music Credit: “Alpha and Omega” by Laurent Parisi [SACEM] via KTSA Publishing [SACEM] and Universal Production Music “Cosmic Call” by Immersive Music (Via Shutterstock Music)