Watch ISS spacewalk July 21

On Tuesday, July 21, 2020, two NASA astronauts will perform the second in a pair of International Space Station (ISS) spacewalks, to finish a 3 1/2-year effort to upgrade the station’s power system. At completion, 24 new lithium-ion batteries and adapter plates will replace 48 aging nickel-hydrogen batteries. NASA TV’s live coverage of the spacewalk will begin on Tuesday at 10:00 UTC (6:00 a.m. EDT). More

(Source: EarhSky - Jul 21)