A pair of astronauts are embarking on a seven-hour spacewalk Friday, the first spacewalk of 2019.
NASA said flight engineers Nick Hague and Anne McClain are venturing outside the International Space Station's Quest airlock to replace nickel-hydrogen batteries with newer, more powerful lithium-ion batteries on the ISS's orbiting laboratory.
NASA said this spacewalk, the first of three, is part of an overall upgrade of the International Space Station's power system.
Up early? Tune in to see @AstroAnnimal and @AstroHague venture outside the @Space_Station for a #spacewalk to upgrade the power storage capacity on our orbiting laboratory. Live coverage starts at 6:30am ET: https://t.co/aaEgPPXZog pic.twitter.com/kECr4AJFis
— NASA (@NASA) March 22, 2019
