To achieve travel times to UY Scuti measurable in decades, what speed range would speculative propulsion need to attain?
Answer
Between $0.2c$ and $0.5c$
To achieve travel times to UY Scuti measurable in decades (specifically $19,000$ to $47,500$ years for the interstellar journey), speculative propulsion methods would need to achieve speeds between $0.2c$ and $0.5c$.
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