Stratolaunch

Stratolaunch, a giant six-engine aircraft with the world’s longest wingspan , makes its historic first flight from the Mojave Air and Space Port in Mojave, Calif., Saturday, April 13, 2019. Founded by the late billionaire Paul G. Allen, Stratolaunch is vying to be a contender in the market for air-launching small satellites. (AP Photo/Matt Hartman)