NASA's Roman mission will test competing cosmic acceleration theories - EurekAlert

The Nancy Grace Roman Space Telescope's enormous, deep panoramas will provide the best opportunity yet to discern between the leading theories about what’s speeding up the universe’s expansion. Roman will explore this mystery using multiple methods, includin…

image: These six cubes show the simulated distribution of galaxies at redshifts 9, 8, 5, 3, 2, and 1, with the corresponding cosmic ages shown. As the universe expands, the density of galaxies within… [+8193 chars]

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