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The Importance To Humanity Of Knowing About Cosmos

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When I look up at the night sky and wonder upon where we are in this vast pocket in the cosmos, it is the simpler questions that yield the more complicated answer. Why do we see color? What is consciousness? And if the universe is expanding, what “stuff” is it expanding into?

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First of all, it is important to state how, and why the universe is expanding. Astronomers have proven this phenomenon by the Doppler Effect. When you hear an ambulance behind you, its siren is heard at a different frequency than when it is next to you. Similarly, light also has a Doppler Shift in which its frequency is changed based on its distance from the person observing it. Astronomers are observing that galaxies have a redshift in them, meaning they have a reddish color to them. This means that the light waves leaving the galaxies are being elongated or stretched to a red color on the electromagnetic spectrum. Thus, the only reason why this would be happening is due to the expansion of the universe. The short answer to this seemingly impossible question is as simple as the universe is everything, so it isn’t expanding into anything. Although the galaxies are moving away from each other, there is no real center to the universe, and no real edge of the universe either.

However, this is where things can get slippery. Just because the universe does not have an edge, it does not mean it is infinite. To understand how something with no limitations can still go on forever, use an analogy of a balloon to represent the very fabric of the universe. Think of a tiny being on a surface of a fully blown balloon. As the being keeps moving around the balloon, it seems as though there is no end to the balloon. However, the balloon still has a finite volume. Oddly enough, this analogy could be used with our planet, as well.

Yet, as mentioned, the balloon example is just one analogy and based on evidence from the earliest light that the universe gave out, a very popular option states that the universe is, in fact, flat. Before you begin to scratch your head, it is actually not difficult to think of the universe as a flat landscape. For example, think of a piece of paper. By taking the two opposite sides and folding them, you would just turn the flat piece of paper into a cylindrical object. A two-dimensional rocket could travel anywhere it likes, and it would never encounter an edge – even though the paper has a finite volume. However, some might say that creating a curve in a paper is basically just making it curved. But, there is a special scientific meaning that defines the word “flat.” When scientists mention this word, they mean “Euclidean,” which translates to parallel lines running parallel and the sum of angles in a triangle always summing to 180 degrees. Although this rule does not apply to spheres or hyperbole, it does on a cylinder and any other shape that can be formed by a piece of paper. At this point, you may be wondering, why this has an impact on us and potential research and astronomy in the future. Living in a flat universe opens up the possibility of traveling in one direction for long enough to be able to end up where you started. In addition, telescopes could be aimed in a certain direction, and we could see ourselves – either in the future or past. Furthermore, by visualizing other abnormal shapes in the universe, potentially seeing mirror images of us or other versions of us could be a possibility in the future.

To conclude, the importance to humanity on this topic may be more relevant in the future. However, for now, it is important to make sure our generation is aware of these complicated, yet straightforward questions. If we can all begin to ask “the next question,” then the future of humanity will be in good hands.

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