This Mach 5 Future Jet Can Fly Anywhere in the World in 4 Hours

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Credit: All Photos by Reaction Engines) 

British firm Reaction Engines is building a plane that can zip almost anywhere in the world within four hours, cool itself by 1000 degrees Celsius in a fraction of a second, and even go into space. The European Space Agency isinterested in the futuristic plane as a way to lower the cost of future launches. 

Written by John Wenz
Read more at Popular Mechanics

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