Space Station Astronauts Are Taking a Spacewalk Today: Watch It Live

Mark Vande Hei spacewalk
NASA astronaut Mark Vande Hei is pictured working outside of the International Space Station during the last spacewalk, on Oct. 10, 2017. (Image credit: NASA)

Two NASA astronauts will head outside the International Space Station (ISS) for a 6.5-hour spacewalk today (Oct. 20), and you can watch their entire excursion live here at 

In the third spacewalk at the ISS this month, Cmdr. Randy Bresnik and flight engineer Joe Acaba will continue working on the newly installed "hand" at the end of the Canadarm2 robotic arm. They'll also replace a fuse in a two-armed robot known as "Dextre" and install a new HD camera outside the station. 

A live webcast of the spacewalk will begin at 6:30 a.m. EDT (1030 GMT), when the astronauts are suiting up and getting ready to leave the Quest airlock. You can watch the entire spacewalk in a live stream here, courtesy of NASA TV. The spacewalk will officially begin when the astronauts switch their spacesuits over to battery power at about 8:05 a.m. EDT (1205 GMT). [Space Station Photos: Expedition 53 Mission Crew in Orbit]

Today's spacewalk was originally scheduled for Oct. 18, but NASA postponed it following the delay of a Russian cargo launch. The Progress 68 cargo craft was supposed to blast off last Thursday (Oct. 12), but the launch was aborted at the last minute. The cargo mission lifted off two days later and arrived at the ISS on Monday (Oct. 16). 

In addition to rescheduling this third spacewalk, NASA also changed the game plan for the day, NASA officials said in a statement. Originally Bresnik and Acaba were going to finish lubricating the new latching end effector (LEE) — Canadarm2's "hand" — but that task will be deferred to a later spacewalk. Instead, the astronauts will replace a light on the new LEE. 

NASA astronauts Randy Bresnik (foreground, with red stripes) and Mark Vande Hei work to install a replacement latching end effector, or hand, on the Canadarm2 robotic arm outside of the International Space Station during a spacewalk on Oct. 5, 2017 (Image credit: NASA TV via

Another task that will be postponed to a later spacewalk is the replacement of an external camera at the Destiny module. That camera has been giving images a yellow hue, NASA officials said in a briefing on Oct. 2. 

Astronauts will still replace the failed fuse on Dextre, install a new HD camera on the Starboard 1 lower outboard truss and relocate some thermal insulation, according to the original plan for this spacewalk. 

This will be Bresnik's fifth spacewalk and Acaba's third. Bresnik participated in the last two spacewalks this month, together with NASA astronaut Mark Vande Hei. Acaba previously conducted two spacewalks with the space shuttle mission STS-129 in 2009. 

Email Hanneke Weitering at or follow her @hannekescience. Follow us @Spacedotcom, Facebook and Google+. Original article on

Join our Space Forums to keep talking space on the latest missions, night sky and more! And if you have a news tip, correction or comment, let us know at:

Hanneke Weitering
Contributing expert

Hanneke Weitering is a multimedia journalist in the Pacific Northwest reporting on the future of aviation at and Aviation International News and was previously the Editor for Spaceflight and Astronomy news here at As an editor with over 10 years of experience in science journalism she has previously written for Scholastic Classroom Magazines, MedPage Today and The Joint Institute for Computational Sciences at Oak Ridge National Laboratory. After studying physics at the University of Tennessee in her hometown of Knoxville, she earned her graduate degree in Science, Health and Environmental Reporting (SHERP) from New York University. Hanneke joined the team in 2016 as a staff writer and producer, covering topics including spaceflight and astronomy. She currently lives in Seattle, home of the Space Needle, with her cat and two snakes. In her spare time, Hanneke enjoys exploring the Rocky Mountains, basking in nature and looking for dark skies to gaze at the cosmos.