A new more precisely measurement of the Hubble Constant

Adam G. Riess and his team published their latest work where a new more precise measurement of the Hubble constant seems to confirm the fact that the expansion acceleration of the universe is due to Dark Energy. Indeed, the latest measure proposed by Riess and team, H_o = 73.8 ± 2.4 km s^–1 Mpc^–1, is completely inconsistent with the inhomogeneous matter models invoked to explain the apparent acceleration of the universe without Dark Energy.

The observation of this galaxy NGC 4258 was used to improve the accuracy of the Hubble Constant  - © NASA

New measures should be performed to confirm the Riess's results but already the measure proposed here has only a 3.3% of uncertainty.

Mpc = Megaparsec = 3.26 million light years

A 3% Solution: Determination of the Hubble Constant with the Hubble Space Telescope and Wide Field Camera 3