The first all-private mission to the International Space Station began its return trip Sunday evening after a string of delays dragged the mission out for a week longer than expected because of weather and other inopportune circumstances.
The mission, called AX-1, was brokered by the Houston, Texas-based startup Axiom Space, which books rocket rides, provides all the necessary training, and coordinates flights to the ISS for anyone who can afford it.
The four crew members — Michael López-Alegría, a former NASA astronaut-turned-Axiom employee who is commanding the mission; Israeli businessman Eytan Stibbe; Canadian investor Mark Pathy; and Ohio-based real estate magnate Larry Connor — left the space station aboard their SpaceX Crew Dragon capsule on Sunday at 9:10 pm EST. But as had happened so often already with this mission, there was one more delay, as the capsule departed 15 minutes past the original planned departure time of 8:55 pm EST, as the capsule occupants dealt with minor communications issues.
They will spend about one day free flying through orbit before plummeting back into the atmosphere and parachuting to a splashdown landing off the coast of Florida around 1 pm ET Monday.
AX-1, which launched on April 8, was originally billed as a 10-day mission, but delays extended the mission by about a week.
During their first 12 days on the space station, the group stuck to a regimented schedule, which included about 14 hours per day of activities, including scientific research that was designed by various research hospitals, universities, tech companies and more. They also spent time doing outreach events by video conferencing with children and students.
The weather delays then afforded to them "a bit more time to absorb the remarkable views of the blue planet and review the vast amount of work that was successfully completed during the mission," according to Axiom.
It's not clear how much this mission cost. Axiom previously disclosed a price of $55 million per seat for a 10-day trip to the ISS, but the company declined to comment on the financial terms for this specific mission beyond saying in a press conference last year that the price is in the "tens of millions."
The mission has been made possible by very close coordination among Axiom, SpaceX and NASA, since the ISS is government-funded and operated. And the space agency has revealed some details about how much it charges for use of its 20-year-old orbiting laboratory.
For each mission, bringing on the necessary support from NASA astronauts will cost commercial customers $5.2 million, and all the mission support and planning that NASA lends is another $4.8 million. While in space, food alone costs an estimated $2,000 per day, per person. Getting provisions to and from the space station for a commercial crew is another $88,000 to $164,000 per person, per day.
But the extra days the AX-1 crew spent in space due to weather won't add to their own personal overall price tag, according to a statement from NASA.
"Knowing that International Space Station mission objectives like the recently conducted Russian spacewalk or weather challenges could result in a delayed undock, NASA negotiated the contract with a strategy that does not require reimbursement for additional undock delays," the statement reads.
It's not the first time paying customers or otherwise non-astronauts have visited the ISS, as Russia has sold seats on its Soyuz spacecraft to various wealthy thrill seekers in years past.