5/31/2023 0 Comments Polar star book![]() shaped its hardened-steel hull - 399 feet long and 83 feet wide - like a football, pointed at both stem and stern. Six diesel locomotive engines and three gas turbines generate 75,000 horsepower to spin propellers as big around as grain silos.Įngineers at Lockheed Shipbuilding & Construction Co. It debuted in 1976 as one of the world’s most powerful nonnuclear ships. None of this would have been possible without the Polar Star. The frigid conditions, ideal for some of the world’s most sophisticated telescopes, enabled astronomers worldwide to capture the first photograph of a black hole. ![]() Research on how emperor penguins endure extreme pressure during deep dives has led to improvements in anesthesia. ![]() ![]() Scientists have drilled down more than 2 miles for ice cores that show how the climate has changed over thousands of years. ![]()
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