The joint US-Russian Soyuz rocket that blasted off from Kazakhstan on Wednesday evening has reached the International Space Station.
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A capsule carrying a US-Russian crew back to Earth after nearly six months on the International Space Station has landed safely on the steppes of Kazakhstan.
Nasa said that the Soyuz capsule carrying American Mike Hopkins and Russians Oleg Kotov and Sergey Ryazanskiy touched down as scheduled, south east of the town of Dzhezkazgan. They spent 166 days in orbit on the space station.
Astronauts aboard the International Space Station will begin a series of spacewalks this weekend to repair the orbital outpost's cooling system, NASA has announced.
One of the station's two ammonia cooling systems shut down last Wednesday, forcing astronauts to power down unnecessary equipment and suspending some of the laboratory's science experiments. The six-member crew was not in any danger, NASA said.
The US space agency has decided to have two astronauts aboard the station replace an apparently faulty valve inside a pump outside the station with a spare.
Three spacewalks are planned to complete the work, the first of which is scheduled for Saturday by station flight engineers Rick Mastracchio and Michael Hopkins. Two more spacewalks are targeted for December 23 and the last on Christmas Day.
The walks will delay a cargo resupply flight until January.
NASA has said its crew members on board the International Space Station are not in any danger following a fault with one of the station's cooling systems.
Ground crews are continuing to investigate the fault.
A NASA spokesman said: "At no time was the crew or the station itself in any danger, but the ground teams did work to move certain electrical systems over to the second loop.
"Some non-critical systems have been powered down inside the Harmony node, the Kibo laboratory and the Columbus laboratory while the teams work to figure out what caused the valve to not function correctly and how to fix it.
"The crew is safe and preparing to begin a normal sleep shift while experts on the ground collect more data and consider what troubleshooting activities may be necessary."
There is an urgent but not an emergency situation on board the International Space Station (ISS) that may require a space walk repair, NASA has told NBC News.
Earlier today one of two cooling loops on the ISS stopped working, which engineers believe was caused by a problem with a flow-control valve.
They are currently re-routing the space station's cooling systems onto the working loop, which means prioritising life control system, science experiments and electrical systems, NASA said.
Should an urgent space walk repair be required, it will take place in the next 24-48 hours.
There are currently three Russian, two American and one Japanese astronauts on board the ISS.
The Sochi Olympic torch has successfully blasted off into space on board a Soyuz rocket, ready to take its first space walk on the International Space Station.
For safety reasons the torch will not be lit during the launch, but once on board the space station Russian cosmonauts Oleg Kotov and Sergei Ryazansky are planning to take it outside the airlock, in what they described as a "spectacular" showcase for the Winter Games.
The Olympic torch has gone into space twice before, in 1996 and 2000, but it has never been taken on a space walk.
NASA has released footage of a cargo ship being grabbed by the International Space Station.
New unmanned commercial cargo ship Cygnus was grabbed by a robotic arm operated by astronauts.
Although it brings more than half a ton of meals for astronauts onboard, Cygnus is on a demonstration mission to prove its technology..
A Soyuz capsule carrying three crew members has docked with the International Space Station.
Soyuz Commander Fyodor Yurchikhin of the Russian Federal Space Agency, NASA astronaut Karen Nyberg and the European Space Agency's Luca Parmitano launched from Kazakhstan on Tuesday.
A Soyuz rocket carrying three astronauts has blasted off on a six-hour journey to the International Space Station.
NASA's Karen Nyberg, Russian cosmonaut Fyodor Yurchikhin and Italy's Luca Parmitano are due to orbit the Earth four times before reaching the ISS, where they will spend six months conducting a variety of experiments.