The respected science historian Helge Kragh writes:
The Hubble law, widely considered the first observational basis for the expansion of the universe, may in the future be known as the Hubble-Lema\^itre law. This is what the General Assembly of the International Astronomical Union recommended at its recent meeting in Vienna. However, the resolution in favour of a renamed law is problematic in so far as concerns its arguments based on the history of cosmology in the relevant period from about 1927 to the early 1930s. A critical examination of the resolution reveals flaws of a non-trivial nature. The purpose of this note is to highlight these problems and to provide a better historically informed background for the voting among the union's members, which in a few months' time will result in either a confirmation or a rejection of the decision made by the General Assembly.He notes:
Until the mid-1940s no astronomer or physicist seems to have clearly identified Hubble as the discoverer of the cosmic expansion. Indeed, when Hubble went into his grave in 1953 he was happily unaware that he had discovered the expansion of the universe.He says the cited evidence that Hubble met with Lemaitre is wrong. Furthermore, there are really two discoveries being confused -- the cosmic expansion and the empirical redshift-distance law. Hubble had a role in the latter, but not the former.