An all-veteran crew is making final preparations for launch this weekend to the International Space Station, kicking off a busy six weeks highlighted by multiple dockings, undockings, and a pair of spacewalks.

Engineers are making final preparations for launch of a Russian Soyuz spacecraft this weekend to ferry an all-veteran U.S.-Russian-Japanese crew to the International Space Station to boost the lab’s crew complement back to six. The launch will kick off a “fantastically busy” timeline, with nine space station “visiting vehicle” operations and two spacewalks over the next six weeks.

“The mission is going to be action packed,” Soyuz flight engineer and eventual space station commander Sunita Williams told CBS News. “I think we’re really up for the pace, we’re up for the challenge, we’re ready to go.”

The Soyuz TMA-05M spacecraft was hauled to the launch pad at the Baikonur Cosmodrome in Kazakhstan Thursday, setting the stage for launch Saturday evening U.S. time.

Her ride — the Soyuz TMA-05M spacecraft — is scheduled for liftoff from the Baikonur Cosmodrome in Kazakhstan at 10:40:03 p.m. EDT Saturday (GMT-4; 8:40 a.m. Sunday local time), the 37th anniversary of the Apollo-Soyuz Test Project that opened the door to U.S.-Russian space cooperation.

“They’ve got a fantastically busy mission ahead of them, they are looking toward nine visiting vehicles during the time they’re up on board the space station, which is really a lot of coming and going,” said NASA chief astronaut Peggy Whitson, a veteran space station commander. “It’s going to take a lot of choreography by the ground teams and the crews on orbit to make this all happen. It’ll be a very challenging and exciting time for them.”

At the controls in the cramped Soyuz command module’s center seat will be Soyuz commander Yuri Malenchenko, veteran of a stay aboard the Mir space station, two long-duration expeditions aboard the International Space Station and a space shuttle station assembly flight. He has logged a combined total of 515 days in space.

Williams, strapped in to Malenchenko’s left, spent 195 days in space during a space station expedition in 2006 and 2007, riding to and from the lab complex aboard a space shuttle. Japanese astronaut Akihiko Hoshide, who helped activate the station’s Japanese research module during a 14-day 2008 shuttle flight, will be seated in the Soyuz command module’s right seat.

The huge exhaust duct below the Soyuz TMA-05M spacecraft on the launch pad at Baikonur.

If all goes well, Malenchenko will oversee an automated approach to the space station, docking at the Earth-facing Rassvet module around 12:52 a.m. EDT Tuesday. Standing by to welcome them aboard will be Expedition 32 commander Gennady Padalka, cosmonaut Sergei Revin and NASA astronaut Joseph Acaba, who were launched to the lab on May 15.

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