However, neither Krevor nor Jean Floyd, the chief executive of Stratolaunch, said anything about the test flight program, including when the plane will fly again and how long the overall test program will last.
Evan Thomas, the Scaled Composites test pilot who flew the plane, said the flight went very well.
Stratolaunch, the company founded in 2011 by the late Microsoft co-founder Paul Allen, conducted the first test flight of the world's largest plane. The dual-fuselage Stratolaunch is created to fly at an altitude of 35,000 feet, where it can drop rockets that ignite their engines and boost themselves into orbit around the planet.
What just happened? The Stratolaunch is a enormous aircraft created to carry rockets into the stratosphere and yesterday it completed its first flight. The Stratolaunch aircraft completed its first flight, debuting a unique style of aircraft to the skies that could change the way we travel by air.
It has been billed by the company as making satellite deployment as "easy as booking an airline flight".
The aircraft has a world-record wingspan of 385 feet, and is 238 feet long.
"It's so huge, it seems like it shouldn't be able to fly", aerospace and launch photographer for NASASpaceFlight.com Jack Beyer told CNN. "People want to see what's next". The American business magnate, who co-founded Microsoft along with Bill Gates in 1975, died of cancer in October past year at the age of 65.
The plane can carry up to three Pegasus rockets before releasing them into space at 35,000 feet (10,670 meters) above the ground, the company says.
There have been concerns about how Stratolaunch's business will work once it takes on customers, with some questioning whether a trend toward smaller satellites would dampen demand for such a large plane.
Powered by the same type of engines used by Boeing 747s, the aircraft is created to take off at a maximum weight of 1.3m pounds. There's great demand for a way to launch rockets more cheaply and from more locations, and very big aircraft are reusable (unlike many rockets), can take off from most large airports and their flights are less weather dependent.
The Stratolaunch aircraft emerged from its Mojave hangar for the first time in May 2017 and proceeded through ground tests, including taxiing and rolling down a runway at near-takeoff speeds.