The two final crew members who will orbit Earth on a SpaceX ship, as part of the all-civilian Inspiration4 mission, have been revealed
  • The final two crew members have been announced for Inspiration4’s civilian mission to orbit Earth. 
  • Dr. Sian Proctor and Chris Sembroski have been named as additional crew members on SpaceX’s ship.
  • They will be joining Jared Isaacman and Hayley Arceneaux on the mission in September.
  • See more stories on Insider’s business page.

In an announcement earlier this week, SpaceX’s Inspiration4, the world’s first all-civilian rocket ride to orbit Earth, revealed the final two members of the four-person crew that will undergo a historic journey into space.

Chris Sembroski and Dr. Sian Proctor were the additional two people who won seats on SpaceX’s Dragon spaceship.

They will accompany Jared Isaacman and Hayley Arceneaux on the mission, where all four will ride aboard the Dragon spacecraft to be launched into orbit by SpaceX’s Falcon 9 rocket. 

SpaceX is planning for a liftoff of no earlier than September 15. The ship will depart from Kennedy Space Center’s Launch Complex 39A.

It is expected to orbit Earth for three days at an altitude of approximately 335 miles, where the crew will eventually touch down off the coast of Florida for retrieval. 

Here’s what we know about the four crew members

Jared Isaacman 

Entrepreneur and philanthropist, Isaacman is a 38-year-old tech billionaire, pilot, and chief executive of Shift4 Payments, a Pennsylvania-based payment processing company. He will charter the flight.

Though he said he has spent more than 6,000 hours flying jets and ex-military aircraft, he has never been to space. Neither have his three fellow passengers, as Insider previously reported.

Isaacman had several goals in planning this mission: to give a diverse community of individuals the opportunity to fly into space and raise money for St. Jude Children’s Research Hospital in Memphis. 

“The stars really aligned for us in terms of this group”, he told The New York Times.

“We promised the crew representing some of the best of humanitarian qualities exemplifying our mission ideals of leadership, hope, prosperity and generosity. And I’m pleased to report that we’ve accomplished that goal,” he said. 

Isaacman will serve as the commander for the SpaceX mission. 

Hayley Arceneaux 

Announced earlier in February, a 29-year-old childhood cancer survivor and physician assistant at St. Jude Children’s Research, Arceneaux is the second civilian to join the crew.

At the age of 10, Arceneaux had part of her femur removed from bone cancer. There are many sporting activities that she cannot do for fear of risking an uncontrolled fall. This is because of a metal rod in her left leg, which was implanted during her bone-cancer treatments as a child.

But now she has the chance to set herself free from all limitations. In an interview with Insider, she said her orthopedic surgeon told her: “There’s going to be no limits on you in space.”

Arceneaux will be the youngest American to fly into space and the first with a prosthetic body part. 

SpaceX’s Starship SN8 flight test in December 2020.SpaceX/Twitter

Sian Proctor 

Proctor, a geoscientist, science communication specialist, and analog astronaut, is one of the newest crew members aboard SpaceX’s Dragon spacecraft. 

Proctor secured her seat after winning a contest sponsored by Isaacman’s e-commerce company, Today reported.

The contest required all entrants to design an online store using Shift4 Payments’ software and then tweet a video describing their space fantasies, per The New York Times.

Proctor told Business Wire: “This opportunity is proof that hard work and perseverance can pay off in unimaginable ways,” said Dr. Proctor. “I have always believed that I was preparing for something special, and that moment has arrived with Inspiration4. 

Her excitement was palpable in an interview with Today’s Tom Costello. “It’s like opening up the chocolate bar and seeing the golden ticket to Willy Wonka and the chocolate factory!” she said. 

Chris Sembroski 

Joining the other three members is Sembroski, 41, a Lockheed Martin employee and Air Force veteran. 

Sembroski was selected from nearly 72,000 entries in a contributing fundraising campaign for St. Jude. He will act as a mission specialist, aiding payloads and science experiments during the flight. 

“Joining the Inspiration4 crew and its mission of support for St. Jude is truly a dream come true. It is my hope that this flight will inspire others to pay that generosity forward by pledging their support for St. Jude and encouraging kids to dream the impossible, ushering in a new era of space exploration open to all,” he said in a statement.

Sembroski first heard about the mission from an advertisement during this year’s Super Bowl event.

“That was just kind of intriguing,” he told The New York Times. “And so, it’s like, ‘All right, I’ll donate to St. Jude and throw my name in the hat to see what happens.'”

The Inspiration4 crew will undergo commercial astronaut training by SpaceX. They will receive emergency preparedness training, as well as partial and full mission stimulations. 

“This is about mental toughness,” Isaacman told The New York Times. “Getting uncomfortable, staying uncomfortable — and how well you perform when you are uncomfortable.”

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