1948 – USA
‘The universe began when a single point of infinitely dense and infinitely hot matter exploded spontaneously. The debris of this explosion began to fly away from the explosion point and is still flying and will keep on flying indefinitely. All the galaxies, stars and planets were formed from this debris’
In 1927 the Belgian astronomer Georges Lemaitre (1894-1966) suggested that at some time in the remote past all the matter in the universe was concentrated at one point. The universe began when this ‘primeval atom’ exploded. This idea was further developed by Gamow, who predicted that leftover warmth from this explosion would still fill the universe. The name Big Bang was given to this theory by Fred Hoyle, who believed in the opposing steady-state theory. It was meant to be a put-down when Hoyle first used it scornfully on a radio talk show in 1950.