Spacewalking astronauts are upgrading the space station today. Here's how to watch it live. | 1/20/2020 | Hanneke Weitering
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NASA astronauts Jessica Meir and Christina Koch are taking their third spacewalk outside the International Space Station today (Jan. 20) to replace the orbiting laboratories aging batteries and you can catch the epic action live online.

The spacewalk began at 6:35 a.m. EST (1335 GMT) today, marking the third time an all-woman team has worked together outside the station. You can watch the spacewalk live here and on's homepage, courtesy of NASA TV.

Meir - Koch - Work - October - Batteries

Meir and Koch are wrapping up work that began in October 2019, to upgrade the batteries that store power generated by the space station's solar array. Their first spacewalk (which was the first all-woman spacewalk ever) took place Oct. 18. A second spacewalk successfully wrapped up Jan. 15.

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Astronauts - Use - Power - Space - Everything

Astronauts use power in space for everything from lighting rooms to conducting experiments. The upgraded batteries are lithium-ion batteries, which are expected to last longer and to generate more power than the previous generation nickel-hydrogen batteries that...
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