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Georges Lemaître

A black-and-white portrait of Georges Lemaître, a Belgian Catholic priest, engineer, and theoretical physicist, wearing a clerical collar and formal attire, with a serious expression.

Belgian Catholic priest, engineer, and theoretical physicist (1894–1966) who in 1927 derived the equations of an expanding universe from general relativity and predicted the linear distance-velocity relation two years before Hubble measured it. He proposed that the cosmos began from a single "primeval atom," the first formal Big Bang model. Einstein dismissed the work in 1927 and embraced it in 1933.

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