Virgin Galactic's VSS Unity spaceplane has detached from its mothership and is independently headed toward space, a livestream from the event showed.
VSS Unity is a suborbital space plane, meaning it won't drum up enough speed to escape the pull of Earth's gravity. Instead, it'll rocket at more than three times the speed of sound — about 2,300 miles per hour — to more than 50 miles above ground.
At the top of the flight path, Branson and his fellow passengers are expected to briefly experience weightlessness.
See Virgin Galactic's VSS Unity detach from mothership: