NASA's crew in Soyuz MS-18 docks at ISS after flight honouring Gagarin

A three-man crew docked at the International Space Station Friday after a flight honouring the 60th anniversary of Soviet cosmonaut Yuri Gagarin becoming the first person in space.

NASA's Mark Vande Hei and Russia's Oleg Novitskiy and Pyotr Dubrov will spend six months in the ISS working on biology, biotechnology, and Earth science experiments.

"There is contact!" Russia's space agency Roscosmos wrote on Twitter.

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"Hey, Expedition 64 –- set the dinner table... Can't wait to join you on@Space_Stationin a few hours!" Vande Hei tweeted to the crew on board the ISS hours before blast-off.

The launch came just ahead of Monday's anniversary of Gagarin's historic flight on April 12, 1961.

Reminders of his achievement were everywhere at the Russia-operated Baikonur cosmodrome in Kazakhstan as Novitsky, Dubrov and Vande Hei prepared for their half-year mission aboard the orbital lab.

TheSoyuzMS-18 spacecraft that the trio took off in has been namedafter the legendary cosmonaut and Gagarin's portrait has been added to its exterior.

Gagarin also came up more than once in the traditional pre-flight press conference on Thursday, where the crew was asked how they planned to mark the anniversary once in space.

"We'll celebrate it together," said 43-year-old Dubrov, who is flying to space for the first time. "And we'll work hard!"

Friday's blast-off was from a different launchpad than the one used for Gagarin's one and only mission, which saw him spend 108 minutes in orbit.

Last used in 2019, the Gagarin launchpad is undergoing upgrades in preparation for a new generation ofSoyuzrockets and expected to return to action in 2023.

Gagarin's mission was a propaganda coup for the Soviet Union and a huge win in the space race with the West, which became one of the Cold War's most exciting subplots.

But the anniversary comes at a difficult time for Russia's space industry, which has suffered a number of setbacks recently, from industry corruption scandals to an aborted take-off scuppering a manned mission in 2018.

Perhaps most importantly, Roscosmos and Baikonur last year lost their monopoly over manned ISS launches, as reusable rockets from Elon Musk's Space X delivered NASA astronauts to the station from American soil.

The emergence of commercial competitors has left Roscosmos with a financial headache, NASA has paid the company tens of millions of dollars per seat for astronauts sent to the ISS.

Russian space officials still talk up new ventures, including bringing back samples from Venus and creating a rocket capable of making 100 round trips to space.

Yet the space budget has fallen year by year as President Vladimir Putin prioritises increased military spending.