Who proposed Big Bang Theory in detail
Answers
In 1916 Einstein published his theory of general relativity. With this he also proposed a theoretical model of Universe (which was not expanding). Then in 1927 Georges Lemaitre proposed the big bang theoretical model of the expanding universe. In around 1930 astronomer Edwin Hubble found that all galaxies were flying away from each other in all directions. So scientists conjectured that in distant past (13.8 billion years ago) all the matter of the universe was confined to a single point called Singularity which exploded with a big bang. Then George Gammow and other scientists predicted hot big bang. They calculated the temperature of the cooled universe at present time. This was experimentally verified by Wilson and Penzias to be 2.7 degree Kelvin. This established the big bang theory as a viable theory.
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A Belgian priest named Georges Lemaitre first suggested big bang theory in the 1920s , when he theorized that the universe started from a single primordial atom . The idea recieved major boosts from Edwin Hubble's observations that galaxies are speeding away from us in all directions , as well as from the 1960s discovery of cosmic microwave radiation interpret as Echoes of the big bang theory by Arno penzias and Robert Wilson .
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