Spacewalkers fit the seventh roll-out solar array to the space station
NASA says the new arrays will lift the station's power generation from 160 kW to about 215 kW. The eighth and last is due on 5 November.
For you: The space station runs entirely on the power it generates and stores. Its original arrays have degraded over more than two decades, so the new roll-out arrays are a lesson in maintaining an ageing power plant without switching it off, the same problem utilities face on Earth.
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