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Massive machines require engineering extremes. The massive man-made satellite, commonly known as the International Space Station, hurtling around the Earth at 27,600 km an hour, has been a temporary home for humans for the last 20 years. The biggest land vehicle on earth, a bucket excavator titled Bagger 293, that can move 240,000 cubic meters of dirt each day. Innovation has a...。NASA’s Perseverance rover is on the verge of changing humanity’s future. Just over a year after touching down on the red planet, Perseverance is embarking on the most demanding part of its mission to date – striking out at top speed for the sites most likely to house signs of life. To succeed, the team must overcome epic challenges and take Perseverance into uncharted territory...。