— SpaceX (@SpaceX) September 10, 2024 During the five-day mission, the Crew Dragon spacecraft will reach its highest-ever orbit, about 435 miles (700 kilometers) above Earth and some 185 miles (298 kilometers) above the International Space Station, which is where the spacecraft usually heads to as part of NASA’s crew rotation missions. During the two-hour spacewalk, Isaacman and Gillis will test a newly designed spacesuit to confirm that it moves and functions as expected in the vacuum of space. “The development of this suit and the execution of the [spacewalk] will be important steps toward a scalable design for spacesuits on future long-duration missions,” SpaceX said on the Polaris Dawn website. The crew will also carry out a number of other science- and technology-based tests while in orbit. How to watch SpaceX is targeting 5:23 a.m. ET (2:23 a.m. PT) on Tuesday, September 10, for the launch of the Polaris Dawn mission from the Kennedy Space Center in Florida. The launch window will last for four hours. A live stream showing final preparations will begin just after midnight ET. You can watch the Falcon 9 rocket carry the crew to space via SpaceX’s feed on X (formerly Twitter). Cameras will capture the early stages of the mission from the ground, from the exterior of the rocket, and also from inside the Crew Dragon capsule. If there are any changes to the schedule, we’ll be sure to update here just as soon as we can. For the very latest information, check Polaris Dawn’s X account. Editors’ Recommendations