Mystery of Star Formation Revealed by Hearts of Molecular Clouds
Press Releases

Mystery of Star Formation Revealed by Hearts of Molecular Clouds

8 January, 2024

Data from the world's largest radio telescopes holds clues An international team of astronomers has revealed mysterious star formation at the far edge of the galaxy M83. This research was presented today in a press conference at the 243rd American Astronomical Society (AAS) meeting in New Orleans, Louisiana. The research used several instruments, including the...
Announcements ALMA – In Search of our Cosmic Origins

23 October, 2020

ALMA – In Search of our Cosmic Origins
Press Releases Early Evolution of Planetary Disk Structures Seen for the First Time

8 January, 2024

Early Evolution of Planetary Disk Structures Seen for the First Time
Announcements We invite you to tour the most powerful astronomical observatory on Earth 

3 January, 2024

We invite you to tour the most powerful astronomical observatory on Earth 
Image Releases Astronomers Uncover Seismic Ripples in Oldest Known Spiral Galaxy with ALMA's Aid

22 December, 2023

Astronomers Uncover Seismic Ripples in Oldest Known Spiral Galaxy with ALMA's Aid

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ALMA Factsheet

Where is ALMA?

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Operation Support Facility (OSF)

San Pedro de Atacama, Chile

Array Operation Site (AOS)

San Pedro de Atacama, Chile

Santiago Central Offices (SCO)

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), MOST and ASIAA (Taiwan), and KASI (Republic of Korea), in cooperation with the Republic of Chile.