Today’s milestone comes less than two months after Virgin Galactic launched the first former Olympian and the first mother-daughter duo to the final frontier on its Galactic 2 flight. The daughter in that duo, 18-year-old Anastatia Mayers, also became the youngest-ever spaceflyer during that mission.

Related: Meet the crew of Virgin Galactic’s ‘Galactic 04’ mission

Galactic 4 began at 11:28 a.m. EDT (1528 GMT) this morning, when Virgin Galactic’s VSS Unity space plane lifted off beneath the wings of its carrier craft, known as VMS Eve.