When combined with observations of how fast the galaxies are moving, astronomers can use the galaxy distances to calculate the present - day expansion rate of space and the effect of dark energy. (newscientist.com)
A discrepancy between two measures of the universe's expansion rate suggests the presence of some unknown astronomical feature. (sciencenews.org)
Two ways of measuring the universe's expansion rate disagree by about 10 percent. (sciencenews.org)