Edwin Powell Hubble (November 20, 1889 – 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. Hubble is known for showing that the recessional velocity of a galaxy increases with its distance from the earth, implying the universe is expanding. Known as "Hubble's law", this relation had been discovered previously by Georges Lemaître; a Belgian priest/astronomer who published his work in a less visible journal. There is still much controversy surrounding the issue and some argue that it should be referred to as "Lemaître's law" although this change has not taken hold in the astronomy community.
From Fora TV: Hubble's Legacy: Imaging the Beauty of the Universe Gresham College - Museum of London The lecture considers the legacy of both EdwinHubble and the Space Telescope... - 04.06.2011, TheVideoNewsPortal
From Fora TV: Ian Morison: Hubble's Heritage Gresham College - Museum of London The lecture considers the legacy of both EdwinHubble and the Space Telescope that bears his name -... - 04.06.2011, TheVideoNewsPortal