ASTR 1200 Study Guide - Midterm Guide: Helioseismology, Radiation Pressure, Solar Prominence
30 Sep 2013
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Document Summary
It is the principle that the sun is the center of the universe and everything does not rotate around the earth. Simply put it shows us that we are just a small piece in a larger whole. What is meant by the phrase the universality of laws by nature give three examples where it applies. Same general law applys everywhere in the universe. Protons and electrons on earth are the same as sun, gravity holds together, stars, galaxies, and clusters of galaxies, and the moon orbits earth the obeys same rules for star orbiting another star. Astronomy is different because it is remote, observational, and must be content with signals. Whereas, in biology and chemistry are mainly experimental, in astronomy you cannot actually visit a star or galaxy. Electromagnetic radiation as a wave is the propagation speed of all em waves is the same, speed of light is the same nothing moves faster.
