2019 The Planck team predicts that the universe should expand at a rate of 67.4 kilometers per second per megaparsec. Michael Greshko, National Geographic, 12 Sep. 2020 Under certain assumptions about the fundamental nature of the universe, Planck data suggest that the Hubble constant should have a value of 67.4 kilometers a second per megaparsec, give or take 0.5. 2022 The trend continued as of their latest analysis last March, Riess’s team pegged the Hubble constant at 74 kilometers per second per megaparsec, 9% higher than the 67.4 extrapolated from the early universe. 2022 Each number is an expression of the same thing-the kilometers-per-second rate of cosmic expansion per every megaparsec (roughly 3.26 million light-years) of space.ĭaniel Leonard, Scientific American, 25 Jan. Joshua Hawkins, BGR, In their analysis, H0 comes out to be 73.04 ± 1.04 kilometers per second per megaparsec.Īnil Ananthaswamy, Scientific American, 18 Apr.
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