Velocidade de expansão do universo?

https://www.theguardian.com/science/2019/nov/02/hubble-constant-mystery-that-keeps-getting-bigger-estimate-rate-expansion-universe-cosmology-cepheid
Citando:
"The other method for establishing the Hubble constant has involved astronomers looking at the rippling pattern of light, called the cosmic microwave background, that formed just after the big bang birth of the cosmos 13.8bn years ago. This background has been surveyed with increasing precision by US and European satellites – most recently by the European Space Agency’s Planck observatory – and these observations have allowed scientists to build a model that takes account of dark energy and dark matter and that shows how the early universe’s growth would probably have produced an expansion that astronomers can measure today."