Jared Isaacman is leading three other privately trained astronauts on a SpaceX vehicle for Polaris Dawn, a mission that will include a daring spacewalk. Space Exploration Technologies Corp, Private Spaceflight, Isaacman, Jared (1983- ), Space and Astronomy, Rocket Science and Propulsion, Research Jared Isaacman is leading three other privately trained astronauts on a SpaceX vehicle for Polaris Dawn, a mission that will include a daring spacewalk. NYT > Business