Atacama Large Millimeter/submillimeter Array | ALMA

ALMA celebrates 10 years of science

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ALMA celebrates 10 years of science

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Winning names for antennas after popular poll

Winning names for antennas after popular poll

ALMA celebrates 10 years of its first image with a contest to name its antennas

ALMA celebrates 10 years of its first image with a contest to name its antennas

ALMA Unveil Galaxies at Cosmic Dawn That Were Hiding Behind the Dust

ALMA Unveil Galaxies at Cosmic Dawn That Were Hiding Behind the Dust

ALMA Scientists Uncover the Mystery of Early Massive Galaxies Running on Empty

ALMA Scientists Uncover the Mystery of Early Massive Galaxies Running on Empty

ALMA Reveals Carbon-Rich, Organic Birth Environments of Planets

ALMA Reveals Carbon-Rich, Organic Birth Environments of Planets

Dense Molecular Clouds in the Center of Milky Way are Unable to Form Stars

Dense Molecular Clouds in the Center of Milky Way are Unable to Form Stars

Interview to Ed Fomalont

Interview to Ed Fomalont

ALMA Goes to New (Wave)Lengths

ALMA Goes to New (Wave)Lengths

Scientists Observe Gas Re-accretion in Dying Galaxies for the First Time

Scientists Observe Gas Re-accretion in Dying Galaxies for the First Time

Almost 15K Reviews for the Most Competitive Proposals Process to Observe with ALMA

Almost 15K Reviews for the Most Competitive Proposals Process to Observe with ALMA

Astronomers make first clear detection of a moon-forming disc around an exoplanet

Astronomers make first clear detection of a moon-forming disc around an exoplanet

ALMA Factsheet

Virtual Tour

Where is ALMA?

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)
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)
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

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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.