Lecture_02 - LECTURE 2: EARTH'S ORIGIN AND INTERNAL...

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LECTURE 2: EARTH’S ORIGIN AND INTERNAL STRUCTURE 1.0 ORIGIN OF THE UNIVERSE STATIC THEORY - UNIVERSE HAS NO BEGINNING OR END AND IS INFINITE PROBLEMS POSED BY STATIC THEORY – CONTRADICTS NEWTON’S 1687 UNIVERSAL GRAVITATION THEORY THAT STATES, “EACH OBJECT IN THE UNIVERSE ATTRACTS EACH OTHER BODY.” THEN WHY HAS UNIVERSE NOT CONTRACTED?? CONTRADICTS EDWIN HUBBLE’S 1929 OBSERVATION OF RED SHIFT IN LIGHT COMING FROM DISTANT GALAXIES. SHIFT INDICATES GALAXIES THAT ARE TWICE AS FAR FROM US MOVE TWICE AS FAST. ALSO INDICATES UNIVERSE IS EXPANDING IN EVERY DIRECTION. DYNAMIC THEORY – HUBBLE’s EXPLOSION OF SPACE OR “BIG BANG” – IT ADVOCATES A SUDDEN COSMIC EXPANSION OF SPACE, ENERGY, AND MATTER DOMINANT SCIENTIFIC THEORY SINCE 1950s UNIVERSE PROBABLY FORMED A VERY LONG TIME AGO AS A SINGULARITY: INFINITESIMALLY SMALL, INFINITELY HOT (10 9 ºK), INFINITELY DENSE, SOMETHING! INFLATED ("BIG BANG"), EXPANDED AND
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COOLED TO THE SIZE AND TEMPERATURE OF OUR CURRENT UNIVERSE (3.2 ºK, -270 ºC) MILESTONES AFTER BIG BANG: HIGH ENERGY DENSITY-> ELECTRONS, QUARKS, NEUTRINOS ->
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Lecture_02 - LECTURE 2: EARTH'S ORIGIN AND INTERNAL...

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