EVERYDAY SCIENCE

Detailed explanation-1: -Edwin Hubble discovered that in 1920 the universe wasn’t static but the growth is continuous .

Detailed explanation-2: -American astronomer Edwin Hubble and others discovered in the 1920s that the Universe is expanding by showing that most galaxies are receding from the Milky Way-and the farther away they are, the faster they are receding.

Detailed explanation-3: -Hubble’s brilliant observation was that the red shift of galaxies was directly proportional to the distance of the galaxy from earth. That meant that things farther away from Earth were moving away faster. In other words, the universe must be expanding. He announced his finding in 1929.

Detailed explanation-4: -In 1927, the year he got his PhD from MIT, LeMaitre proposed this theory, in which he stated that the expanding universe was the same in all directions–the same laws applied, and its composition was the same–but it was not static. He had no data to prove this, so many scientists ignored it.