"Hubble, Edwin Powell"@en . . . . . . "1889-11-20Z"^^ . "Edwin Powell Hubble"@en . . . "1953Z"^^ . "Edwin Hubble"@en . . "Edwin Powell Hubble (November 20, 1889 \u2013 September 28, 1953) was an American astronomer who played a crucial role in establishing the field of extragalactic astronomy and is generally regarded as one of the most important observational cosmologists of the 20th century."@en . . "American astronomer" . . "1953-09-28Z"^^ . . . "1889Z"^^ . .