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    For the first time, astronomers witness the dawn of a new solar system
    Press Releases

    For the first time, astronomers witness the dawn of a new solar system

    17 July, 2025
    International researchers have, for the first time, pinpointed the moment when planets began to form around a star beyond the Sun. Using the ALMA telescope, and the James Webb Space Telescope, they have observed the creation of the first specks of planet-forming material — hot minerals just beginning to solidify. This finding marks the first...
    Announcements ALMA Board Approves Development of Next-Generation Spectrometer for Morita Array
    8 July, 2025

    ALMA Board Approves Development of Next-Generation Spectrometer for Morita Array

    Press Releases ALMA Reveals Hidden Structures in the First Galaxies of the Universe
    1 July, 2025

    ALMA Reveals Hidden Structures in the First Galaxies of the Universe

    New Super-resolution Imaging Reveals the First Step of Planet Formation after Star Birth
    24 June, 2025

    New Super-resolution Imaging Reveals the First Step of Planet Formation after Star Birth

    Press Releases Largest Oort Cloud Comet Ever Observed Unveils Its Secrets with ALMA’s Powerful Gaze
    17 June, 2025

    Largest Oort Cloud Comet Ever Observed Unveils Its Secrets with ALMA’s Powerful Gaze

    The People 10 Years Transforming Together our Understanding of the Universe
    16 March, 2023

    10 Years Transforming Together our Understanding of the Universe

    Press Releases ALMA Reveals Lives of Planet-Forming Disks
    13 June, 2025

    ALMA Reveals Lives of Planet-Forming Disks

    Press Releases From Stardust to Stone: Windswept Grains Hold Clues to Planet’s Beginnings
    13 June, 2025

    From Stardust to Stone: Windswept Grains Hold Clues to Planet’s Beginnings

    Announcements ALMA – In Search of our Cosmic Origins
    23 October, 2020

    ALMA – In Search of our Cosmic Origins

    Press Releases A Fierce Storm in a Giant-Barred Spiral Galaxy 11 Billion Years Ago
    26 May, 2025

    A Fierce Storm in a Giant-Barred Spiral Galaxy 11 Billion Years Ago

    Press Releases Astronomers Observe Pair of Galaxies in Deep-Space Battle
    21 May, 2025

    Astronomers Observe Pair of Galaxies in Deep-Space Battle

    Press Releases ALMA Inspires New Models for the Evolution of Planet-Forming Disks
    6 May, 2025

    ALMA Inspires New Models for the Evolution of Planet-Forming Disks

    Press Releases ExoALMA survey reveals incredible images of structures in protoplanetary disks 
    28 April, 2025

    ExoALMA survey reveals incredible images of structures in protoplanetary disks 

    Announcements ALMA will be present at Antofagasta Puerto de Ideas 2025  
    23 April, 2025

    ALMA will be present at Antofagasta Puerto de Ideas 2025  

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    ALMA Factsheet

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    Operation Support Facility (OSF)

    San Pedro de Atacama, Chile

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    San Pedro de Atacama, Chile

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    Santiago, Chile

    • Operations Support Facility (OSF)

      • Operations Support Facility (OSF)
      • Operations Support Facility (OSF)
      • Operations Support Facility (OSF)
      The ALMA Operations Support Facility, at an altitude of 2900 metres in the Chilean Andes, serves as the focal point for most of the observatory activities, hosting the antenna control room, laboratories and offices. Address: Kilómetro 121, Carretera CH 23, San Pedro de Atacama, Chile Phone: +56 2 2467 6416
    • Array Operation Site (AOS)

      • Array Operation Site (AOS)
      • Array Operation Site (AOS)
      • Array Operation Site (AOS)
      The ALMA Array Operations Site, at an altitude of 5000 metres in the Chilean Andes, houses the ALMA antennas and the correlator, the fastest data processing system ever used at an astronomical site. Coordinates: 23° 1′ 23.5″ S, 67° 45′ 16.7″ W
    • Santiago Central Offices (SCO)

      • Santiago Central Offices (SCO)
      • Santiago Central Offices (SCO)
      • Santiago Central Offices (SCO)
      The ALMA headquarters, located in Vitacura district in Santiago of Chile, houses the Director’s Office and its associated functional units, as well as astronomers, technicians and administrative staff, and the ALMA archive. Address: Alonso de Córdova 3107, Vitacura , Santiago, Chile Phone: +56 2 2467 6100

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    ALMA, a worldwide collaboration

    The Atacama Large Millimeter/submillimeter Array (ALMA) -the largest astronomical project in existence- is a single telescope of revolutionary design, composed of 66 high precision antennas located on the Chajnantor Plateau, 5000 meters altitude in northern Chile. ALMA is an international partnership of the European Southern Observatory (ESO), the U.S. National Science Foundation (NSF) and the National Institutes of Natural Sciences (NINS) of Japan, together with NRC (Canada), NSTC and ASIAA (Taiwan), and KASI (Republic of Korea), in cooperation with the Republic of Chile.

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    Santiago Central Offices (SCO): Alonso de Córdova 3107, Vitacura , Santiago, Chile | Phone: +56 2 2467 6100
    Operation Support Facilities (OSF): Kilómetro 121, Carretera CH 23, San Pedro de Atacama, Chile | Phone: +56 2 2467 6416