Watch Live: ISS Crew to Conduct Emergency Spacewalk Today to Replace MDM Box

NASA will undertake its an urgent repair work outside the International Space Station (ISS) on Tuesday, May 23 with expedition 51 Commander Whitson and Flight Engineer Fischer replacing a malfunctioning computer relay box that failed three days ago.

The box known as multiplexer-demultiplexer (MDM) is the only other unit that regulates the operation of radiators, solar arrays and cooling loops, beside route commanding to other station systems. NASA said the space feat will be live streamed on its NASA Television and NASA website from 6:30 a.m. EDT.

It may be noted that all space station crew members set their work schedule to Greenwich Mean Time, or GMT and it will be 10:30 GMT today onboard the ISS for all the crew to plan their spacewalk and monitoring it.

WATCH Live Tuesday, May 23, 6:30 a.m. (10:30 GMT)

Last time similar spacewalk was conducted in April 2014 for the replacement of MDM. Today’s spacewalk will last for a duration of two-and-a-half-hour. Whitson will replace the MDM, while Fischer will install a pair of antennas on the US Destiny Laboratory module for enhanced wireless communication in case of future spacewalks.

This is the tenth time Whitson is undertaking a spacewalk and the second time for Fischer. The ISS mission has undertaken 200 spacewalks so far and the current one will be the 201st in support of space station maintenance.


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