SpaceX’s 1st all-civilian crew set to splashdown Saturday night

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(ORLANDO, Fla.) — After three days in space, the first all-civilian flight to Earth’s orbit is set to splashdown tonight.

The Dragon capsule is expected to return to Earth just after 7 p.m. ET Saturday evening.

It will be traveling at 17,500 miles per hour when it deorbits; will slow down to around 350 mph when the parachute deploys at 18,000 feet; will and stay at around 119 mph before it hits the ocean.

SpaceX’s preferred splashdown location is in the Atlantic Ocean off the coast of Cape Canaveral, but they are prepared to pivot to the Gulf of Mexico, if needed.

SpaceX’s Inspiration 4 mission has already made history as the farthest any civilian has traveled from Earth — 367 miles above it — even farther than the International Space Station.

There is always risk launching into space and coming home. While the crew has been trained by SpaceX, they are not professional astronauts.

Saturday’s splashdown will be the third SpaceX Dragon-crewed capsule to splashdown from orbit, but the first with no professional astronaut on board.

Billionaire Jared Isaacman, 38, an experienced pilot, is commanding the mission. He founded a payment process company called Shift4 Payments and purchased all four seats on the flight for an estimated $220 million.

Isaacman wanted this mission to benefit St. Jude Children’s Research Hospital. Before the launch he personally donated $100 million to help end child cancer.

He reserved one seat for 29-year-old St. Jude ambassador Hayley Arceneaux. Arceneaux was treated at St. Jude as a child and returned to work there as a physician’s assistant. She is now the youngest American to go to space as well as the first pediatric cancer survivor.

Dr. Sian Proctor, 51, the third occupant, made history as well as the fourth African American woman astronaut to travel into space.

Rounding out the crew is Chris Sembroski, 41, an Iraq war veteran and engineer with Lockheed Martin.

They all spoke with children currently being treated at St. Jude live from space on Friday.

“What kind of sleeping bag do you have?,” one child asked Arceneaux.

“So if you’ve ever been camping, we pretty much have those same kind of sleeping bags,” she said. “We were in our sleeping bags on top of our chairs, but we were floating on top of the chair and we had a seat belt around our sleeping bag. So we didn’t fly away when we were sleeping.”

“Can you take pictures in space?,” another child asked Proctor.

“We absolutely can take pictures in space,” she responded. “And we’ve been taking a lot of those pictures and video so we can capture this moment and share it with everybody when we come home.”

Since liftoff, the mission has raised an additional $500,000 for the research hospital.

The crew has also been busy conducting experiments including using a portable ultrasound to measure their corneas and optic nerves for indications on intracranial pressure.

“We’ve also been taking several swabs of different parts of our body to evaluate the microbiome and how that changes in these three days in space,” Arceanaux said.

ABC News’ Gio Benitez and Gina Sunseri contributed to this report.

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