Elon Musk’s SpaceX’s Dragon spacecraft carrying four private citizens arrived at the International Space Station Saturday, marking the first space trip comprised solely of non-professional astronauts without a government entity on board. The trip—coordinated by Axiom Space, a private company dedicated to private space travel— included Michael Lopez-Alegría, a former NASA astronaut who works for Axiom; Israeli businessman Eytan Stibbe; Canadian businessman Mark Pathy; and Ohio-based real estate agent Larry Connor. The trip will last for 10 days at a cost within “tens of millions” of dollars, though the company previously advertised a seat aboard a 10-day trip at $55 million a seat. The four will work on individual research projects while on board, and their meals—which cost $2,000 a day, per person—were coordinated by celebrity chef Jose Andrés.