Read More: Telegraph
It looks like something out of a spy film and has a wingspan longer than a football pitch. The world's largest plane has been unveiled by Microsoft co-founder Paul Allen after it left its hangar in the California desert for the first time. The "Stratolaunch" has a wingspan of 385 feet, weighs up to 580 tons and has six jet engines. But it isn't meant to carry passengers. The plane is designed to launch rockets into space from the air, saving jet fuel compared to the process of launching them from the ground and vastly reducing the cost of sending cargo into space. It was moved out of its hangar for "aircraft fuelling tests", according to Stratolaunch Systems, putting the end to its construction and paving the way for ground flights. It expects to demonstrate its first launch as early as 2019.