GEO 303 Chapter Notes - Chapter 1: Chemical Element, Redshift, Vise
10 May 2016
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Galaxies: local concentrations of matter: red shift: the farther the distant galaxy is from us, the greater is the red shift of its light spectrum. Doppler effect: how we receive light waves coming from a moving source. Big bang: 13. 8 million years ago, matter has been expanding ever sense, the contents of the universe were a dense nucleus. Matter: matter can become energy, and vise versa, current expansion of the universe is accelerating, driven by dark matter. Referred to as dark matter because we don"t know what it is: formed of fundamental particles called elements. 98 naturally occurring elements, plus 20 man made (aren"t dark matter: matter is composed of protons (positive), neutrons (zero) and. They form atoms, with the center being the nucleus. Cloud of electrons outside the nucleus is responsible for its size and shape. Protons and electrons being equal makes a neutral atom. Cosmic abundance: everything that can be created, was created.
