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Leonardo da Vinci (1452-1519), Italian Renaissance painter from Florence. Engraving by Cosomo Colombini (d. 1812) after a Leonardo self portrait. Ca. 1500.

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America’s 5 Most Notorious Cold Cases (Including One You May Have Thought Was Already Solved)

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New York NY/ USA- November 23, 2018 Hordes of shoppers throng the Macy's Herald Square flagship store in New York looking for bargains on the day after Thanksgiving, Black Friday.

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Rocketdyne

American company

Also known as: Boeing Rocketdyne

Learn about this topic in these articles:

contribution to U.S. space program

In Boeing Company: Rockwell International Corporation
The company’s Rocketdyne division (established as part of North American Aviation in 1955) developed the rocket engines used in many U.S. space programs, including those for the three stages of the Saturn V rocket and the main engines of the shuttle orbiter.
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role of Hoffman

In Samuel Kurtz Hoffman
…in charge of North American’s Rocketdyne Division, which developed new high-pressure pumps and improved techniques for rocket maneuvering. Rocketdyne pioneered in the use of highly volatile fuels and liquid oxidizers of extremely low temperatures. In 1958 Hoffman took charge of the development of the rocket engines that were used in…
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