Discover and read the best of Twitter Threads about #H0tension
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Inspired by arxiv.org/abs/1907.10625 and several important observational updates in recent months, I put together an updated compilation plot of H0 measurements from indirect (cosmological-model-dependent) and direct methods. References are in the thread below. All units km/s/Mpc 
Planck 2018: arxiv.org/abs/1807.06209 H0 = 67.36 +/- 0.54 This is derived from the CMB TT+TE+EE and CMB lensing power spectra. ("This value is our “best estimate” of H0 from Planck, assuming the base-LCDM cosmology." on their page 17)
ACT DR4 + WMAP9: arxiv.org/abs/2007.07288 H0 = 67.6 +/- 1.1 This is derived from the CMB TT+TE+EE power spectra, with a conservative prior on the optical depth tau. @ACT_Pol verifies that Planck 2018 'low' H0 value is not due to any systematics in CMB data.
