NASA, JAXA, and Roscosmos astronauts join the ISS after a successful SpaceX Dragon mission, welcomed by Expedition 72 crew.

Reaching orbit from NASA’s Kennedy Space Center, the newest crew includes NASA’s Anne McClain and Nichole Ayers, both military pilots; and Japan’s Takuya Onishi and Russia’s Kirill Peskov, both former airline pilots. They will spend the next six months at the space station, considered the normal stint, after springing Wilmore and Williams free.

The two astronauts who crewed the Boeing Starliner greeted their replacements, who docked at the International Space Station.

The four newcomers — representing the U.S., Japan and Russia — will spend the next few days learning the station’s ins and outs from Butch Wilmore and Suni Williams. Then the two will strap into their own SpaceX capsule later this week to close out an unexpected extended mission that began last June.

NASA astronauts Sunita Williams, Nick Hague, Barry Wilmore, and Donald Pettit unbox Thanksgiving meals, from the International Space Station (ISS), in this screen grab taken from a handout video, released on November 26,

The delayed mission has reached the space station, the hatch has opened and soon the two astronauts who've been "stuck" in space can return home.