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They then boarded three white Teslas for the launchpad, a new tradition established by SpaceX, whose owner Elon Musk also made an appearance.
The cars' license plates read "recycle," "reuse," and "reduce," in a nod to the fact that both the Falcon 9 booster and Crew Dragon capsule were deployed on previous missions.
Flying on reused vehicles has been a key cost-saving goal of NASA's partnerships with private industry.
The day before, Pesquet tweeted a photo of the space quartet lounging on the beach before their voyage.
"Our friends on the @Space_Station are expecting us to show up and we don't want to be late. They even installed my bedroom recently and literally made my bed. Such nice hosts!" he added.
The extra "bed" is necessary to accommodate an unusually large number of people aboard the ISS: 11 in total, as the Crew-2 team overlaps for a few days with Crew-1 astronauts, in addition to three Russian cosmonauts.
It is the third time SpaceX will send humans to the ISS as part of its multibillion dollar contract with NASA under the Commercial Crew Program.
The first mission launched last May and ended nine years of American reliance on Russian rockets for rides to the ISS following the end of the Space Shuttle program.
"In terms of getting the operations ready, it's always easier the third time you do it," Daniel Forrestel, a NASA launch integration manager, told AFP.
"I would never ever want to describe spaceflight as 'routine,' but 'more familiar' is a good way to put it," he added.
Major step for Europe
Ahead of the launch, European Space Agency (ESA) astronaut Andreas Mogensen of Denmark told AFP the mission was also a major step forward for Europe, which has dubbed it "Alpha" after its own naming convention.
"On the one hand, it means a lot of course to have an astronaut going to the International Space Station—but at the same time it's also the next mission in a long line of missions."
Germany's Matthias Maurer will be the next European on a SpaceX mission this fall, followed by Italy's Samantha Cristoforetti next spring.
ESA will also be a key partner to the United States in the Artemis program to return to the Moon, providing the power and propulsion component for the Orion spacecraft, and critical elements of a planned lunar orbital station called Gateway.
Mogensen predicted that in the hours leading up to the launch, Pesquet, who is a close friend of his, would be feeling a "sense of relief" to finally start the mission after years of planning.
"You're very focused on what's going to happen, on your tasks at hand," he said.
The Crew-2 team has around 100 experiments in the diary during their six-month mission.
These include research into what are known as "tissue chips"—small models of human organs that are made up of different types of cells and used to study things like aging in the immune system, kidney function and muscle loss.
Another important element of the mission is upgrading the station's solar power system by installing new compact panels that roll open like a huge yoga mat.
After launch, the Falcon 9 rocket will return to Earth for an upright vertical landing on a drone ship, and the Crew Dragon capsule is scheduled to dock with the ISS at 5:10 am (0910 GMT) Saturday, with hatch opening two hours later.
Pesquet and Hoshide have said they plan to liven things up by sharing their national cuisine with crewmates.
The Frenchman's last meal prior to launch: roast chicken and mashed potatoes, a cheese and baguette platter, and ice cream for dessert.
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© 2021 AFP