Feb. 15 (UPI) -- The International Space Station is once again fully staffed with the arrival of astronauts from NASA, the European Space Agency and Roscosmos on Saturday afternoon.

A SpaceX Dragon carried the four Crew-12 members docked to the Harmony module on the ISS at 3:15 p.m. EST and, after leak checks and pressurization between the craft and the station, the hatch was opened about two hours later.

NASA astronauts Jessica Meir and Jack Hathaway, ESA astronaut Sophie Adenot and Roscosmos cosmonaut Andrey Fedyaev entered the ISS at 5:14 p.m. EST Saturday afternoon, joining NASA astronaut Chris Williams and Roscosmos cosmonauts Sergey Kud-Sverchkov and Sergei Mikaev who are already about the orbiting outpost.

"We say welcome to Crew-12 today and we are happy they all arrived safe and sound, Kud-Sverchkov, ISS Expedition 74 commander, said during an arrival event after the hatch opening. "We have been waiting for this moment for a very long time. So we are very happy and proud to work as a team here."

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