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Launch of SpaceX's private Inspiration4 mission slips by 24 hours

The Inspiration4 crew, from left: Chris Sembroski, Sian Proctor, Jared Isaacman and Hayley Arceneaux.
The Inspiration4 crew, from left: Chris Sembroski, Sian Proctor, Jared Isaacman and Hayley Arceneaux. (Image credit: John Kraus/Inspiration4)

Inspiration4, SpaceX's first all-civilian mission, will launch at least a day late.

The three-day mission will now launch from the NASA Kennedy Space Center in Cape Canaveral, Florida no earlier than 8 p.m. EDT Wednesday, Sept. 15 (1200 GMT Thursday, Sept. 16) due to a combination of weather conditions and technical requirements, Inspiration4 said Friday (Sept. 10) in a mission update (opens in new tab).

Inspiration4 is a private mission to Earth orbit purchased by Jared Isaacman, the billionaire founder of Shift4 Payments. He'll be joined on the flight by Hayley Arceneaux, Sian Proctor and Chris Sembroski.

Live updates: SpaceX's Inspiration4 private all-civilian orbital mission

Mission managers met Thursday (Sept. 9) to perform a standard flight readiness review before flight, along with receiving an initial weather briefing. The decision was made after looking at weather conditions at the launch site, ascent area and landing sites along with "the readiness of the Falcon 9 rocket, Dragon spacecraft, associated ground systems, recovery assets and other key elements of SpaceX's human spaceflight system," the update stated.

The new date, the update added, "will allow additional time for final preparations, vehicle checkouts and data reviews. SpaceX and Inspiration4 will narrow down the launch window to five hours approximately three days before liftoff."

There are a few other milestones that must be met before the crew of four rocket to Earth orbit. The Inspiration4 release indicated that more work on the Crew Dragon spacecraft, which is still a fairly new vehicle after its first crewed flight in 2020, is forthcoming. The spacecraft was successfully mated with its Falcon 9 rocket and is now expected to have "an integrated static fire test targeted for this weekend," ahead of the launch.

The Crew Dragon being used is a vehicle named "Resilience," which also flew on SpaceX's Crew-1 mission to the International Space Station for NASA. Resilience will make a solo journey this time, flying higher than the ISS this time before splashing down in the Pacific Ocean. The all-civilian crew has had six months of training since the names were announced in March.

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Elizabeth Howell, Ph.D., is a contributing writer for (opens in new tab) since 2012. As a proud Trekkie and Canadian, she tackles topics like spaceflight, diversity, science fiction, astronomy and gaming to help others explore the universe. Elizabeth's on-site reporting includes two human spaceflight launches from Kazakhstan, and embedded reporting from a simulated Mars mission in Utah. She holds a Ph.D. and M.Sc (opens in new tab). in Space Studies from the University of North Dakota, and a Bachelor of Journalism from Canada's Carleton University. Her latest book, NASA Leadership Moments, is co-written with astronaut Dave Williams. Elizabeth first got interested in space after watching the movie Apollo 13 in 1996, and still wants to be an astronaut someday.