# Georges Lemaître

Georges Lemaître

Monseigneur Georges Lemaître, priest and scientist
Born 17 July 1894
Charleroi, Belgium
Died 20 June 1966 (aged 71)
Leuven, Belgium
Nationality Belgian
Fields Cosmology
Astrophysics
Institutions Catholic University of Louvain
Alma mater Cambridge University
Known for Theory of the expansion of the Universe
Big Bang theory
Signature

Monsignor Georges Henri Joseph Édouard Lemaître (17 July 1894 – 20 June 1966) was a Belgian priest, astronomer and professor of physics at the Catholic University of Louvain. He was the first person to say the Universe is growing. Some people think it was Edwin Hubble, but that is not correct.[1][2] Lemaître was also the first to make the Hubble's law and the Hubble constant.[3][4][5][6] Lemaître also started what became known as the Big Bang theory of the origin of the Universe. He called it his 'hypothesis of the primeval atom'.[7][8] He was called Monseigneur because he was a secular priest.[source?]

## References

General relativity
$G_{\mu \nu} + \Lambda g_{\mu \nu}= {8\pi G\over c^4} T_{\mu \nu}$
Einstein field equations