Question: Cosmon or Cosmonium is a hypothetical form of matter where the Universe would have been in a dense form of matter as a particle named Cosmon, the idea was originally proposed by Georges Lemaître, was a Belgian Catholic Priest, astronomer and professor of physics at the Catholic University of Leuven, in what year?
Sentence (from "Georges Lemaître"): He was the first to derive what is now known as Hubble's law and made the first estimation of what is now called the Hubble constant, which he published in 1927, two years before Hubble's article.
Relevant evidence: No