SpaceX finished August with a record number of Falcon 9 missions, and the Elon Musk-led space company isn’t slowing down. A highly anticipated mission in September will be the Polaris Dawn private crewed mission, which was just postponed from this week due to unfavorable weather conditions. If it does commence eventually, the mission will fly four crew members, commanded by the billionaire Jared Isaacman, further into space than humans have traveled in more than 50 years. In addition, SpaceX has...