Explain all answers clearly, with complete sentences and proper essay structure if needed. An asterisk (*) designates a quantitative problem, for which you should show all your work.
15.Alien Technology. suppose that aliens are actually visiting Earth in UFOs by considering the distances to star in comparison to the distance to the moon which is the fastest distance that human have sofa traveled describe how the alien Technology would have to compare to ours.
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Cosmic Perspective Fundamentals
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