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Review the third paragraph. Staying Grounded During the nineteenth century, many Americans believed in Manifest Destiny. This phrase refers to the idea that the United States was certain to expand its territory to the Pacific Ocean and beyond. While a popular and patriotic notion for many, others saw the idea of Manifest Destiny as an aggressive and arrogant mission that put people in harm's way. Today, the same concept of entitled expansion can be seen in the enthusiasm surrounding sending humans to Mars. While the image of deep space travel and settlement on a whole new planet is certainly romantic, it is far from practical, or even humane. The dangers of this overly ambitious voyage are so grave that getting to Mars and attempting to settle it are not worth the Select the evidence that the author provides for the following supporting claim: the astronauts could suffer physically and mentally. The stress and excitement of the trip would lead the astronauts to make dangerous mistakes. The astronauts would not be willing to voluntarily make the rocket journey to Mars. There is a high likelihood of a catastrophic equipment failure during the rocket journey to Mars. The astronauts would travel in microgravity, which can erode parts of the human body