NASA astronaut Peggy Whitson stars in the highest-resolution video ever broadcast live from the International Space Station, bur Amazon Web Services plays a supporting role.

Wednesday’s 4K ultra-high-definition live stream, set to start at 10:30 a.m. PT (1:30 p.m. ET), makes use of a UHD-capable video encoder from AWS Elemental that was sent up to the space station just last December aboard a Japanese cargo craft.

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