Elon Musk's SpaceX venture launches Inspiration4, an all-civilian spaceflight which will be the first attempt at orbit around the Earth without a professional crew of astronauts. Jared Issacman, a billionaire who earned his fortune in the payment procession business; Haley Arcenaux, a physician's assistant and childhood bone cancer survivor; Chris Sembrowski, a data engineer; and artist Sian Proctor comprise the four-person crew.