Herein, Einstein's theory of relativity and the feasibility of a manned roundtrip to Alpha Centauri is looked at from an engineering perspective. Results reveal some very significant questions and surprises. Reactions will range from astonishment, unbelief, acute criticism, condemnation, and elation. Never-the-less, some results will raise eyebrows because they definitely bring to question some underpinnings of General Relativity(GR) and Special Relativity(SR). In addition, an interstellar Starship is "designed" and illustrated to demonstrate the enormity of such a mission. It is shown that the best hope to accomplish such a mission is a radically new propulsion system.
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