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: NASA: Cooling pump on space station shuts down

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

China completes first mission to moon and back

11 hours ago

China completed its first return mission to the moon early Saturday with the successful re-entry and landing of an unmanned probe, state media reported, in the latest step forward for Beijing's ambitious ...

Tracking a gigantic sunspot across the Sun

11 hours ago

An active region on the sun – an area of intense and complex magnetic fields – rotated into view on Oct. 18, 2014. Labeled AR 12192, it soon grew into the largest such region in 24 years, and fired off ...

Cassini sees sunny seas on Titan

Oct 30, 2014

(Phys.org) —As it soared past Saturn's large moon Titan recently, NASA's Cassini spacecraft caught a glimpse of bright sunlight reflecting off hydrocarbon seas.

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.