Two astronauts from the US shuttle Discovery have embarked upon their first space walk of their current mission to the International Space Station.
Americans Rick Mastracchio and Clayton Anderson carried out repair work on the space station, removing a faulty ammonia tank.
Two more spacewalks are planned before the crew return on April 19.
Discovery docked at the ISS on Tuesday, one day after taking off from Cape Canaveral in Florida in the southeast United States.
This mission is set to be one of the last for the 26-year-old Discovery following President Barack Obama’s vow to cut spending on space travel.
Discovery’s sister ships Altantis and Endeavour are also being retired due to cost concerns.
Space walk for two astronauts