Astronauts install new batteries outside the ISS

Astronauts install new batteries outside the ISS

Two NASA astronauts ventured outside the 20-year-old International Space Station to replace aging nickel-hydrogen batteries with fresh lithium-ion units.

Floating outside the Quest airlock to perform the 6.5-hour-long U.S. EVA-52 was NASA’s Anne McClain and Nick Hague, both Expedition 59 flight engineers.

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Bringing a knife to a spacewalk: Cosmonauts inspect Soyuz leak repair

Bringing a knife to a spacewalk: Cosmonauts inspect Soyuz leak repair

During a nearly eight-hour spacewalk, two Russian cosmonauts used a knife to peel back thermal insulation in order to inspect an area of the Soyuz MS-09 spacecraft where a small leak occurred and was repaired earlier in the year.

In August 2018, a minor leak was detected aboard the International Space Station. The source of the slow depressurization event was traced to the Orbital Module of Soyuz MS-09.

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Russian spacewalk runs into overtime during ‘Icarus’ experiment installation

Russian spacewalk runs into overtime during ‘Icarus’ experiment installation

Two Russian cosmonauts stepped outside the International Space Station for more than 7.5 hours to deploy several small satellites and install an experiment designed to monitor animal migration.

Expedition 56 flight engineers Oleg Artemyev and Sergey Prokopyev were tasked with Russian EVA 45, which officially began at 16:17 UTC Aug. 15, 2018, when the Pirs docking compartment's airlock hatch was opened.

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Astronauts install high-definition cameras outside ISS

Astronauts install high-definition cameras outside ISS

Two NASA astronauts ventured outside the International Space Station to perform the sixth spacewalk of 2018 at the orbiting complex. The nearly seven-hour long outing saw the duo install new cameras in preparation for upcoming commercial crew flights.

The primary task for this particular extravehicular activity was to install high-definition cameras to provide enhanced views during the docking of commercial crew spacecraft.

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Spacewalking astronauts swap ISS coolant pumps

Spacewalking astronauts swap ISS coolant pumps

Two Expedition 55 NASA astronauts ventured outside the International Space Station May 16, 2018, for a 6.5-hour-long spacewalk. They were tasked with rearranging coolant pumps and replacing external cameras and antennas.

The primary task of the spacewalk was to move two pump flow control subassembly, or PFCS, units. These devices are designed to drive and control the flow of ammonia coolant on the exterior of the ISS to regulate the temperature of the station’s power-generating equipment, according to NASA.

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Spacewalking astronauts finish Canadarm2 work at breakneck speed

Spacewalking astronauts finish Canadarm2 work at breakneck speed

Two astronauts—one American, the other Japanese—suited up to venture outside the International Space Station to finish work upgrading the outpost’s robotic Canadarm2, a process that has now involved five extravehicular activities over some four months.

The six-hour U.S. EVA-48 began when NASA astronaut Mark Vande Hei and Japan Aerospace Exploration Agency astronaut Norishige Kanai put on their suits and exited the Quest airlock.

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Cosmonauts perform longest Russian spacewalk to upgrade high-gain antenna

Cosmonauts perform longest Russian spacewalk to upgrade high-gain antenna

In the second planned spacewalk of 2018, two Russian cosmonauts went outside the International Space Station to upgrade an electronics box on the Lira high-gain antenna at the aft end of the outpost.

The goal for Russian EVA-44 was to install an upgraded electronics box—a high-frequency receiver unit—on the Lira antenna located at the aft-end of the 17-year-old Zvezda service module. It was never designed for on-orbit servicing.

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Software patch fixes Canadarm2 anomaly, US EVA-48 postponed

Software patch fixes Canadarm2 anomaly, US EVA-48 postponed

NASA has postponed its planned Jan. 29, 2018, spacewalk to swap a latching end effector on the International Space Station’s robotic Canadarm2 after robotics specialists devised a software patch to fix a communications anomaly with the recently-installed mechanism.

While an exact date has not been set, the agency said it is targeting mid-February for the rescheduled outing.

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NASA reports problem with newly installed Robotic arm 'hand'

NASA reports problem with newly installed Robotic arm 'hand'

Just days after installing a new grapple fixture on the International Space Station’s robotic Canadarm2, NASA is working on a plan to re-install the old latching end effector on an upcoming spacewalk after a problem was found with the new mechanism.

U.S. EVA-28 was already planned for Monday, Jan. 29, 2018, less than a week after the previous spacewalk installed the new LEE.

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Astronauts replace Canadarm2 ‘hand’ on ISS in first spacewalk of 2018

Astronauts replace Canadarm2 ‘hand’ on ISS in first spacewalk of 2018

The first spacewalk of 2018, U.S. EVA-47, is now in the history books after two NASA astronauts completed a nearly 7.5 hour extravehicular activity to replace an aging latching end effector on the International Space Station’s robotic Canadarm2.

Canadarm2 has a latching end effector, also called a LEE, on either side of the 17-meter robotic arm to either grab onto the exterior of the station, move objects around the outpost, or grab visiting spacecraft.

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