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Tuesday, April 12, 2016

National Geographic Sailor's Delight


via National Geographic Photo of the Day http://photography.nationalgeographic.com/photography/photo-of-the-day/boston-blood-moon/

NASA T-38C Passes in Front of the Sun at Supersonic Speed


An Air Force Test Pilot School T-38C passes in front of the sun at a supersonic speed, creating shockwaves that are caught photographically for research. NASA is using a modern version of schlieren imagery to visualize supersonic flow phenomena with full-scale aircraft in flight. The results will help engineers design a quiet supersonic transport. via NASA http://www.nasa.gov/image-feature/t-38c-passes-in-front-of-the-sun-at-supersonic-speed