Measurements of how fast the universe is expanding differ depending on how you measure the rate. Could a huge under-density of galaxies, including the Milky Way, be to blame?
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David Rubin, an assistant professor in the University of Hawai‘i Mānoa Department of Physics and Astronomy, and his team will design software needed to process observations of thousands of supernovae or exploding stars that Roman is expected to discover, helping to measure and explain how the universe has expanded and evolved.