SpaceX has finally confirmed the execution time for its spacewalk mission. At dawn on August 26th (next Monday), SpaceX's Dragon spacecraft will launch from Florida, USA, carrying four passengers on a five-day space journey. They will travel to an orbit about 1400 kilometers from Earth to complete the first spacewalk mission, where astronauts will wear SpaceX-designed spacesuits to go outside the cabin.

This is the farthest human space travel from Earth in more than 50 years since NASA's (National Aeronautics and Space Administration) Apollo program, which will pass through the Van Allen radiation belts—the belts of high-energy particles trapped in the Earth's magnetic field. At the same time, this mission signifies that humanity is about to complete the first commercial spacewalk.

Musk believes this will be an epic attempt.

The launch mission, named Polaris Dawn, is the first leg of the manned spaceflight program Polaris Program, initiated by Jared Isaacman in cooperation with SpaceX. The launch time of the mission was originally scheduled for the fourth quarter of 2022 and has been postponed several times.

Isaacman has shared their detailed five-day itinerary, with the first three days being quite busy: The main task of the first day is to find the time when the risk of micro-meteoroid orbital debris is minimal, so as to determine the launch time for Polaris Dawn to the 1400-kilometer altitude;

On the second day, some scientific research will be completed, with about more than 40 experiments, while ensuring that the spacecraft and spacesuits are not faulty, preparing for the spacewalk;

The third day will carry out extravehicular activities, and the spacewalk is expected to last about two hours;

Other passengers include Isaacman's long-term partner, retired Air Force pilot Scott Poteet, who serves as a pilot, and two SpaceX employees, Anna Menon and Sarah Gillis, the former as a medical officer, and the latter as a mission specialist responsible for supervising the astronaut training program.

In addition to the spacewalk, the main objectives of this mission also include testing the laser communication link between the Dragon spacecraft and the Starlink satellites, carrying out scientific research, and some assignments.

The plan has also cooperated with multiple institutions and academic organizations with government backgrounds, including the Translational Research Institute for Space Health (TRISH), BioServe Space Technologies at the University of Colorado Boulder, the Space Technology Laboratory at Embry-Riddle Aeronautical University, Weill Cornell Medical College, the Johns Hopkins University Applied Physics Laboratory, the Pacific Northwest National Laboratory, and the U.S. Air Force Academy.

It is reported that the astronauts will wear the latest designed spacesuits by SpaceX for the Polaris Dawn mission. It has evolved from the IVA spacesuit (intra-vehicle activity spacesuit, for emergency use), with upgrades in materials, manufacturing processes, and joint design—new coating materials for the 3D printed helmet can cope with strong sunlight; the helmet is also equipped with a head-up display and camera, providing real-time information on the pressure, temperature, and relative humidity of the spacesuit; the spacesuit has borrowed new thermal management textiles and flame-retardant materials from the middle stage of the Falcon rocket and the trunk of the Dragon spacecraft.

The spacewalk of the pilots will be broadcast live, and Isaacman emphasized that a large number of cameras will be installed inside and outside the cabin.