ALMA has its conceptual roots in three astronomical projects — the Millimeter Array (MMA) of the United States, the Large Southern Array (LSA) of Europe, and the Large Millimeter Array (LMA) of Japan.
Den ALMA hat seng Ufäng an dräi astronomesche Projeten: dem Millimeter Array (MMA) vun den USA, dem europäesche Large Southern Array (LSA) an dem japaneschen Large Millimeter Array (LMA).