April 13, 2019. Stratolaunch, the world's largest airplane and built to launch rockets, takes first flight on Saturday. 
With a wingspan measuring 385 feet, the airplane is built to launch rockets from the air. 
Late Microsoft co-founder Paul Allen founded Stratolaunch in 2011. 

Real Footage, World's largest airplane Stratolaunch takes first flight and landing, built to launch rockets 


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