In this photo provided by Virgin Galactic, the VSS Unity's rocket motor burns above the Earth on Sunday, July 11, 2021. Entrepreneur Richard Branson and five crewmates from his Virgin Galactic space-tourism company reached an altitude of about 53 miles (88 kilometers) over the New Mexico desert, enough to experience three to four minutes of weightlessness and see the curvature of the Earth. (Virgin Galactic via AP)