Two NASA astronauts are spacewalking outside the ISS right now

NASA astronauts Kate Rubins and Victor Glover are currently performing a spacewalk outside of the International Space Station, working to upgrade the station's solar arrays. The two astronauts began their spacewalk at 6:12 a.m. ET (3:12 a.m. PT) on Sunday, February 28, and they are expected to spend the rest of the morning carrying out upgrade work. The station will soon have new solar arrays installed — the four large pairs of solar panels which collect energy from the sun to power the station's needs. The current solar arrays have been in constant use since the first pair were deployed in December 2000. Though the arrays are still functioning, they were only designed for a 15-year life originally, so their performance has degraded over time and it's time they got replaced. The new arrays will be more efficient and should give a 20% to 30% boost to the station's power, even though they are smaller than the current arrays. Before the new arrays can be installed, however, the ISS crew has to prepare the outside of the station with modification kits. That's the task of Rubins and Glover today, who will be moving along the station's backbone truss structure to… Read full this story

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