ERTH 2403 Lecture Notes - Lecture 1: Supernova Remnant, Big Bang, Geochronology
26 Apr 2016
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Document Summary
The origin of the ocean is linked to the earths origin; The origin of the earth is linked to the origin of the solar system and the galaxies. Scientist cannot find evidence of the big bang but can use theoretical mathematical models of the big bang. About a billion years after the big bang: Began to congeal and the galaxy cooled down. Stars and planets are found within galaxies. *- galaxy: a huge aggregation of stars, dust, gas, and other debris held together by gravity. *- our galaxy is called the milky way galaxy. The sun is one of the stars of the milky way galaxy. The sun and its planets form the solar system. The solar system was formed from a solar nebula and was formed approximately. The sun and its planets: formed from a solar nebula. Solar nebula: could of gas and dust (~75% h, ~23% he, ~2% dust, ice, heavier elements)
