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by jamesmontalvo3 4810 days ago
Both you and the servers you're pulling the content from are stationary on the ground, and any satellites used are in geosynchronous orbit. ISS is travelling 17000 mph. So while it may have clear line of sight to a ground station in New Mexico one minute, the next minute that same line of sight is in Texas.

Also, for a spacewalk the video source is from a space suit, so the video signal is sent wirelessly from the spacesuit to ISS, then sent to a TDRS satellite, then to the ground. The spacesuit camera is admittedly not as good as I'd like it to be, but considering all the architecture supporting it started being put in orbit over 10 years ago, and was designed before that, it's pretty good.

1 comments

That's cool did you directly work on any of the systems? I have been poking around the NSTS 07700 Volume X Book 1 Flight and Ground Specification. The EVA, and Video subsystems are highlighted there.

Crazy stuff.