First private spacewalk launched by SpaceX’s Polaris Dawn mission

SpaceX launched the Polaris Dawn mission to attempt the first-ever private spacewalk, and one of the most dangerous spacewalks ever attempted.

The four-person crew will spend up to five days in Earth orbit, with two crew members performing an extravehicular activity (EVA) on the third day. During this EVA, the spacecraft will be depressurized for about two hours. The two remaining crew members will also need to wear space suits.

This is different from other modern spacewalks, which typically use an airlock to seal the craft off the vacuum of space while the astronauts are outside. The Crew Dragon capsule used in this mission has no airlock, making it more similar to the early days of spaceflight in the 1960s and 1970s. Additionally, all previous spacewalks have been conducted by government-trained astronauts, while the Polaris Dawn crew is civilian.

Although the spacesuits have been thoroughly tested on Earth, they are a new design, and the risks are compounded by the fact that the flight will be farther from Earth than any other human spaceflight since the end of the Apollo program in 1972.

The flight’s mission commander is SpaceX’s Polaris program chief and billionaire co-founder Jared Isaacman. The rest of the crew is retired Air Force test pilot Scott Poteat and SpaceX engineers Sarah Gillis and Anna Menon.

The Crew Dragon capsule used on this flight was named “Resilience” and was its third launch aboard a Falcon 9 rocket. The reusable Falcon 9 first stage returned to Earth and landed on SpaceX’s Just Read the Instructions drone over the Atlantic Ocean.

SpaceX’s Crew Dragon capsules are also used to transport astronauts and supplies to and from the International Space Station, and one of them is scheduled to return NASA astronauts Butch Wilmore and Sunita Williams to Earth in early 2025 after they were stranded when their launch vehicle, the Boeing Starliner, encountered problems.