Image: Astronaut Mike Hopkins on Dec. 24 spacewalk

Dec 29, 2013
Credit: NASA

On Dec. 24, 2013, NASA astronaut Mike Hopkins, Expedition 38 Flight Engineer, participates in the second of two spacewalks, spread over a four-day period, which were designed to allow the crew to change out a degraded pump module on the exterior of the Earth-orbiting International Space Station.

He was joined on both spacewalks by NASA astronaut Rick Mastracchio, whose image shows up in Hopkins' helmet visor.

The pump module controls the flow of ammonia through cooling loops and radiators outside the , and, combined with water-based cooling loops inside the station, removes excess heat into the vacuum of space.

Explore further: Astronauts poised for second spacewalk to repair station

add to favorites email to friend print save as pdf

Related Stories

NASA: Cooling pump on space station shuts down

Dec 12, 2013

NASA said Wednesday it was looking into a problem with a malfunctioning cooling pump on the International Space Station, but there was no immediate danger to the two American astronauts, three Russian cosmonauts, ...

NASA orders urgent spacewalk repairs at station

Dec 17, 2013

NASA has ordered up a series of urgent spacewalks to fix a broken cooling line at the International Space Station, a massive repair job that could stretch to Christmas Day.

Recommended for you

Scientists 'map' water vapor in Martian atmosphere

10 hours ago

Russian scientists from the Space Research Institute of the Russian Academy of Sciences and the Moscow Institute of Physics and Technology (MIPT), together with their French and American colleagues, have ...

Water fleas prepared for trip to space

14 hours ago

Local 'Daphnia' waterfleas are currently being prepared by scientists at the University of Birmingham for their trip to the International Space Station (ISS), where they will be observed by astronauts.

The worst trip around the world

15 hours ago

As you celebrate the end of the year in the warmth of your home, spare a thought for the organisms riding with a third-class ticket on the International Space Station – bolted to the outside with no protection ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.