Two NASA astronauts are currently on a spacewalk, working outside the International Space Station to install a new solar array as part of a long-term project to upgrade the station’s power systems. The spacewalk is being livestreamed, so you can watch live using the video below or catch up afterward if you missed watching it live.
The aim of the upgrades is to boost the station’s power systems by supplementing its old solar arrays. The previous solar arrays, which are large panels in pairs that jut out from the station to collect energy from the sun, are up to 20 years old and hence past their 15-year service life. The old panels won’t be removed though, as they do still work to generate power — they are just not as efficient as they used to be.