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The private Inspiration4 astronauts set to ride a SpaceX rocket arrive in Florida for Sept. 14 launch

The crew of the private Inspiration4 mission — from left, Chris Sembroski, Sian Proctor, Jared Isaacman and Hayley Arceneaux — wrapped up their training at SpaceX headquarters in Los Angeles and headed to Florida on Sept. 9, 2021. The quartet is scheduled to launch to Earth orbit aboard a SpaceX Crew Dragon capsule from NASA’s Kennedy Space Center on Sept. 14, 2021.
The crew of the private Inspiration4 mission — from left, Chris Sembroski, Sian Proctor, Jared Isaacman and Hayley Arceneaux — wrapped up their training at SpaceX headquarters in Los Angeles and headed to Florida on Sept. 9, 2021. The quartet is scheduled to launch to Earth orbit aboard a SpaceX Crew Dragon capsule from NASA’s Kennedy Space Center on Sept. 14, 2021. (Image credit: Inspiration4 via Twitter)

The four-person crew of SpaceX's all-civilian Inspiration4 mission has arrived in Florida to prep for their historic liftoff next week.

"We have arrived at @NASAKennedy . . . it was a great morning of flying with my @inspiration4x crew. Right side is in! Standard. Expect more flights around KSC as we get closer to the big launch," Inspiration4 commander Jared Isaacman said via Twitter today (Sept. 9).

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

The quartet will ride to orbit on a SpaceX Crew Dragon capsule, which is scheduled to launch atop a Falcon 9 rocket from Kennedy Space Center's Pad 39A on Tuesday (Sept. 14) at 8 p.m. EDT (midnight on Sept. 15 GMT). 

Live updates: SpaceX's Inspiration4 private all-civilian orbital mission
Related: Inspiration4: SpaceX's historic private spaceflight in photos

The Crew Dragon in question is a vehicle named "Resilience," which also flew on SpaceX's Crew-1 mission to the International Space Station for NASA. But there will be no meetup with the orbiting lab on Inspiration4; Resilience will circle Earth solo for three days, then come back for a parachute-aided splashdown in the Atlantic Ocean.

Related: SpaceX shows off its dome window on Dragon for Inspiration4 spaceflight

The Inspiration4 crew was announced in March and soon began a six-month training regimen. That work included "centrifuge training, Dragon simulations, observations of other SpaceX launch operations, Zero-G plane training, altitude training and additional classroom, simulation and medical testing," Inspiration4 representatives wrote in a statement last week. "This focused preparation was essential in team development and being ready to execute their role as the first commercial crew to orbit the Earth."

Isaacman formulated the Inspiration4 plan in part to raise money for St. Jude Children's Research Hospital. Arceneaux is a childhood bone cancer survivor who was treated at St. Jude. She now works at the hospital as a physician's assistant.

Editor's note: This story was updated at 5:10 p.m. EDT on Sept. 9 with news of the crew's arrival in Florida.

Mike Wall is the author of "Out There" (Grand Central Publishing, 2018; illustrated by Karl Tate), a book about the search for alien life. Follow him on Twitter @michaeldwall. Follow us on Twitter @Spacedotcom or Facebook. 

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Mike Wall
SPACE.COM SENIOR SPACE WRITER — Michael has been writing for Space.com since 2010. His book about the search for alien life, "Out There," was published on Nov. 13, 2018. Before becoming a science writer, Michael worked as a herpetologist and wildlife biologist. He has a Ph.D. in evolutionary biology from the University of Sydney, Australia, a bachelor's degree from the University of Arizona, and a graduate certificate in science writing from the University of California, Santa Cruz. To find out what his latest project is, you can follow Michael on Twitter.