Two Russian cosmonauts spent more than seven hours in open space, in front of the International Space Station to prepare it for the arrival of the new Russian module.
The first spacewalk of Oleg Novitsky and Petr Dubov, who arrived at the space station in April, lasted 7 hours and 19 minutes, and was broadcast live by NASA.
Cosmonauts prepared the station to unlock and stow the docking module, which will be replaced next month by the new multi-purpose laboratory module "Science".
They disconnected the antenna and other equipment of the module, and replaced the regulator board for the fluid flow of the system to ensure the thermal regime of the functional-cargo block.
The two Russians joined NASA astronauts Mark Vande Heij, Shenou Kimbroughji, Megan MacArthur, Japan Space Agency astronaut Akihiko Hoshida, and European Space Agency astronaut Thomas Pesquet on the International Space Station.
The launch of the Russian Science laboratory module has been delayed several times due to technical problems. Russian space officials said it would finally launch in July.
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