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This plane will be able to fly anywhere in the world within 4 hours The engine will be able to fly in outer space too. British aerospace firm Reaction Engines Limited is working on an engine system that will be able to take 300 passengers anywhere in the world in just four hours. Even more impressively, the engine will also be used to fly a plane in outer space, as Business Insider reports. The engine system is called SABRE, and it relies on a device called the precooler - technology that cools down the air entering the engineer system by more than 1,000 degrees Celsius in .01 seconds. That corresponds to an unheard-of cooling rate of 400 megawatts, and will allow the plane to “breathe” oxygen. This means that the engine system will be able to run at a much higher power than is currently possible According to Reaction Engines, SABRE will be used inside two upcoming plane models - LAPCAT A2, a commercial plane that will be able to transport passengers from Brussels to Sydney in &q