...continued from part one.
As regards the origins of the universe, the scientific community traditionally believed in its eternal existence. Going as far back as Ancient Greek thought, the prevailing scientific concept was that the universe always existed and would continue to do so. Everything changed when Albert Einstein introduced his General Theory of Relativity (1915, 1917), and especially when the Russian mathematician Alexander Friedmann (1888-1925) solved its field equations, in 1922, with results which indicated an expanding universe[4].


