Episode Details

NASA’s new Nancy Grace Roman Space Telescope is poised to revolutionize our understanding of dark energy—possibly rewriting the rules of cosmology. After Hubble’s groundbreaking discovery that the universe’s expansion is accelerating, scientists now need to know if dark energy is constant or weakening over time. Roman’s unprecedented wide-field view will map vast swaths of the sky, hunting supernovae and using gravitational lensing to peer deeper into cosmic history. If it confirms dark energy’s strength is fading, we may have to abandon our current universe model—and usher in a new era of cosmic discovery, much like Einstein upended Newton.

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