Stratolaunch, Which Flew the World's Biggest Airplane (Once), Sold to Mystery Owner

Stratolaunch's rocket carrier plane, the largest aircraft ever built, takes off from the Mojave Air and Space Port in Mojave, California during its first test flight on April 13, 2019.
Stratolaunch's rocket carrier plane, the largest aircraft ever built, takes off from the Mojave Air and Space Port in Mojave, California during its first test flight on April 13, 2019. (Image credit: Stratolaunch Systems)

The company that operates the world's largest airplane has a new owner — but we don't know who it is.

Stratolaunch Systems, the satellite-launching venture established by billionaire Microsoft co-founder and longtime space enthusiast Paul Allen in 2011, has changed hands, the company announced earlier this month.

"Stratolaunch LLC has transitioned ownership and is continuing regular operations," Stratolaunch representatives wrote in an Oct. 11 statement. That statement did not identify the new owner, and we remain in the dark today.

Related: Stratolaunch Test Photos: The World's Largest Plane in Action

California-based company Scaled Composites built for Stratolaunch a huge plane with a 385-foot (117 meters) wingspan. This dual-fuselage aircraft, known as Roc, is designed to carry a satellite-toting rocket high in the sky. After being dropped at altitude, the rocket will fire up, carrying its payload to space. 

This air-launch strategy is not new; it's currently employed by Northrop Grumman's Pegasus rockets and Virgin Galactic's six-passenger SpaceShipTwo suborbital vehicle, for example.

Stratolaunch had been owned by Allen's holding company, Vulcan. But after Allen died in October 2018, his sister Jody — the co-founder and chair of Vulcan, and the executor and trustee of her brother's estate — decided to set an exit strategy, Reuters reported earlier this year

Stratolaunch soon scaled back its operations significantly and laid off a large portion of its workforce, Geekwire reported. And in June, CNBC reported that Vulcan was seeking to sell Roc, for $400 million. 

Roc has just one flight under its belt, a 2.5-hour-long test jaunt that took place this past April over California's Mojave Desert. It's unclear when the huge plane will lift off again; we'll just have to wait for more news.

"Our near-term launch vehicle development strategy focuses on providing customizable, reusable, and affordable rocket-powered testbed vehicles and associated flight services," Vulcan representatives added in the Oct. 11 statement. "As we continue on our mission, Stratolaunch will bring the carrier aircraft test and operations program fully in-house. We thank Vulcan Inc and Scaled Composites for turning an ambitious idea into a flight-proven aircraft."

Mike Wall's book about the search for alien life, "Out There" (Grand Central Publishing, 2018; illustrated by Karl Tate), is out now. Follow him on Twitter @michaeldwall. Follow us on Twitter @Spacedotcom or Facebook

Join our Space Forums to keep talking space on the latest missions, night sky and more! And if you have a news tip, correction or comment, let us know at:

Mike Wall
Senior Space Writer

Michael Wall is a Senior Space Writer with and joined the team in 2010. He primarily covers exoplanets, spaceflight and military space, but has been known to dabble in the space art beat. His book about the search for alien life, "Out There," was published on Nov. 13, 2018. Before becoming a science writer, Michael worked as a herpetologist and wildlife biologist. He has a Ph.D. in evolutionary biology from the University of Sydney, Australia, a bachelor's degree from the University of Arizona, and a graduate certificate in science writing from the University of California, Santa Cruz. To find out what his latest project is, you can follow Michael on Twitter.