Samantha Cristoforetti (R), an Italian astronaut with the European Space Agency, and Russian cosmonaut Oleg Artemyev are scheduled to conduct a rare joint spacewalk on June 21.
Mandatory Credit:	Joel Kowsky/NASA

Samantha Cristoforetti (R), an Italian astronaut with the European Space Agency, and Russian cosmonaut Oleg Artemyev are scheduled to conduct a rare joint spacewalk on June 21.
Mandatory Credit: Joel Kowsky/NASA

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Russian and European astronauts conduct rare joint spacewalk

Two astronauts — one European and one Russian — exited the airlock on the International Space Station for a spacewalk on Thursday, marking the first time in more than 20 years such a joint endeavor has taken place.