The strange aircraft, built by the legendary Aeronautical Engineering Company Scaled Composites in the Mojave Desert, has two fuselages and is powered by six Boeing 747 engines.
Theoretically, it must be used to carry and drop a small rocket at an altitude that will then light up your engine and propel the space to place the satellites in orbit. This is a more flexible method of accessing space than vertical rocket take-offs, since a large take-off runway would be sufficient.
Stratolaunch's plane left the airport and "space" in Mojave, California, at 6:58 a.m. local time, and remained in the air for two and a half hours, the company said in a statement. So far, the aircraft only had taxi tests.
The maximum speed during the flight was 304 km / h (189 miles per hour, according to Stratolaunch), and the plane climbed 17,000 feet, or 5182 meters.