Atacama Large Millimeter/submillimeter Array | ALMA

Out With a Bang: Explosive Neutron Star Merger Captured for the First Time in Millimeter Light

Press Releases

Out With a Bang: Explosive Neutron Star Merger Captured for the First Time in Millimeter Light

Capturing the Onset of Galaxy Rotation in the Early Universe

Capturing the Onset of Galaxy Rotation in the Early Universe

Close Encounter More Than 10,000 Years Ago Stirred Up Spirals in an Accretion Disk

Close Encounter More Than 10,000 Years Ago Stirred Up Spirals in an Accretion Disk

ALMA Gets Front-Row Seat to an Ongoing Star-Formation Standoff in the Large Magellanic Cloud

ALMA Gets Front-Row Seat to an Ongoing Star-Formation Standoff in the Large Magellanic Cloud

Undergraduate Researcher Captures Young Galaxy's "Coming of Age" and Finds Evidence That Early Galaxies May Be Bigger and More Complex Than We Thought

Undergraduate Researcher Captures Young Galaxy's "Coming of Age" and Finds Evidence That Early Galaxies May Be Bigger and More Complex Than We Thought

Scientists on the Hunt for Planetary Formation Fossils Reveal Unexpected Eccentricities in Nearby Debris Disk

Scientists on the Hunt for Planetary Formation Fossils Reveal Unexpected Eccentricities in Nearby Debris Disk

Unknown structure in galaxy revealed by high contrast imaging

Unknown structure in galaxy revealed by high contrast imaging

Astronomers reveal first image of the black hole at the heart of our galaxy

Astronomers reveal first image of the black hole at the heart of our galaxy

Outreach

Astronomical Mural

Astronomical Mural

Scientists Find Elusive Gas Hiding in Plain Sight

Scientists Find Elusive Gas Hiding in Plain Sight

ALMA – In Search of our Cosmic Origins

ALMA – In Search of our Cosmic Origins

Demand to Observe with ALMA Keep Increasing

Demand to Observe with ALMA Keep Increasing

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.