The Universe This assignment will introduce you to the vastness of the universe. When you have completed this study guide, you will know what some of the largest objects in the universe are and what they are made of. The Universe and Its Formation 1. Describe the universe and give two examples (that last part is a joke, why?). The universe is the whole of everything that exists including every thing from the Earth to thousands of galaxies . Giving two examples would not be possible because scientists believe that there may be a parallel univer 2. Astronomers use a law of wave motion to determine if galaxies are moving away from us or towards us. one The Doppler effect is the apparent change in wavelength of light caused by the relative Uni motion of the source and the observer. If a galaxy is moving away from us the wavelength appears longer than it actually is, so it appears redder than it actually is. This phenomenon is called a fedshift 3a. More distant galaxies have greater red shifts than closer galaxies. Using this fact Edwin Hubble was able to determine that more distant galaxies are moving away from us faster than closer galaxies. State Hubble's Law. Galaxies are moving away from Earth at speeds proportional to their distance," the faster they are the faster they are moving away from b. Hubble's Law led Hubble to realize that the universe is expanding in all directions tact 4a. What current theory describes the process believed to have formed the universe as we know it? The Big Bang Theory b. How old is the universe ? _approximately 13.7 billion years old c. Describe the Big Bang Theory and give a brief history of the Universe