Space Firm Founded by Billionaire Paul Allen Sold to New Owner

A new family of launch vehicles including air-launch system, medium-lift rockets and a reusable space cargo plane, are seen in this artist's rendering image released by Stratolaunch Systems Corp, the space company of billionaire Microsoft co-founder Paul Allen, based in Seattle, Washington, U.S., on August 20, 2018. Courtesy Stratolaunch/Handout via REUTERS

SEATTLE—Stratolaunch Systems Corp., the space company founded by late billionaire and Microsoft Corp. co-founder Paul Allen, said on Oct. 11 it was continuing operations after transitioning ownership, but did not name the new owner.