How the Massive ALMA Antennas Move in Perfect Unison

Smithsonian Channel Pick of the Week

English - June 26, 2017 16:00 - ★★★★ - 31 ratings
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For all 66 ALMA antennas to move in exact unison, the precision of the dish surface must be less than the width of a strand of hair. Witnessing them whirl in the desert is a magnificent sight.

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