"Today’s animated Doodle depicts Lemaitre within the constantly expanding universe that he first envisioned, surrounded by galaxies expanding outward just as he said they would," writes Google on its website.

Georges Henri Joseph Edouard Lemaitre (1894-19660) – a Belgian Catholic priest, astronomer and professor of physics at the Catholic University of Leuven – is known for his theories of 'Exanding Universe' and 'Big Bang'. However, Hubble’s name is more often associated with the Big Bang since his extensive work led to new topic area in physics called 'relativistic cosmology'.

"Most people have heard of the Big Bang theory, but fewer recognize the name Georges Lemaitre, the man who came up with the hypothesis that transformed our understanding of astrophysics. Born on this day in 1894, Lemaitre was a Belgian Catholic priest who proposed that the universe began as a single primordial atom, which he referred to as the 'Cosmic Egg'," informs the website.

Lemaitre’s 1927 paper theorising that the universe was expanding was soon substantiated by Edwin Hubble’s observations, which were published in 1929, it adds.