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Technology has influenced our interpretation of the origin and nature of the universe starting in the early 1900s and continuing on until today Technology continues to influence as people are willing to create and modify it Applied science continues to advance and change bringing along with it changes in our theories about the evolution of this and other galaxies In 1912 an astronomer named Vesto Slipher noted in his observances that all the spiral galaxies that he observed had a red-shifted spectrum Using an instrument that splits light waves into spectrums he split the light waves from the galaxies In this way he was able to measure if a galaxy is moving and if it is moving away or toward us If a galaxy is moving toward us the light waves will appear bluer shorter wavelengths and if they are moving away from us they will appear redder longer wavelengths In the early twenties Edwin Hubble used the technology of wavelengths developed by Slipher and realized that there was a definite trend of the galaxies moving away from us at a velocity directly proportionate to their distance This brought about the first evidence that we live in a constantly evolving universe This was the first observational analysis to suggest an initial starting point to the universe He used a ground-based telescope to investigate the masses of stars called nebulae to help with proving his theories In the twenties some believed that we were all part of one huge galaxy and still others believed that the possibility of a whole world of galaxies outside our own was conceivable What Edwin Hubble observed with his telescope led him to theorize that galaxies all began from a very densely compacted matter that exploded In 1929 he professed we were in a universe that was a billion light years across and that every part was moving away from every other part at speeds of 100 million
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