Watch live: astronauts repair the ISS during historic 200th spacewalk

Two NASA astronauts are about to embark on the 200th spacewalk outside the International Space Station (ISS).

Peggy Whitson and Jack Fisher are the two lucky Americans who will venture out into the vacuous void to repair a few problems on the ISS’s exterior and swap out a few parts.

LIVE NOW: @AstroPeggy and @Astro2Fish prepare to venture outside @Space_Station for 6.5 hour #spacewalk. Watch: https://t.co/mzKW5uDsTi pic.twitter.com/4jldGpDMNK

— NASA (@NASA) May 12, 2017

For Fisher, it will be his first ever time walking through space, but for 57-year-old Whitson, it’s just another day at the office. She broke the record for most days spent in space by a NASA astronaut in April.

This will be the 200th spacewalk outside the International Space Station since 1998

Notably, Whitson could also become the third most experienced astronaut ever in terms of time spent spacewalking.

.@AstroPeggy could leap into 3rd place all-time for cumulative spacewalking time today. pic.twitter.com/zLbY2OFgqy

— Intl. Space Station (@Space_Station) May 12, 2017

In addition to livetweeting the event, NASA will broadcast the events live from the ISS on its NASA Live video portal. Note: You’ll need to install Flash Player to view it on a browser other than Google Chrome, but it’s well worth the watch.

NASA’s YouTube channel is also broadcasting the event at the time of writing, but it hasn’t confirmed that it will air the entire walk, which is set to last around six hours.

Feature image: Peggy Whitson via NASA Image Archive