Atacama Large Millimeter/submillimeter Array
Definition
The Atacama Large Millimeter/submillimeter Array (ALMA) is an advanced radio telescope array located in the Atacama Desert of northern Chile. It consists of 66 high-precision antennas designed to observe the universe in millimeter and submillimeter wavelengths.
5 Must Know Facts For Your Next Test
- ALMA is situated at more than 5,000 meters above sea level on the Chajnantor Plateau.
- The array combines signals from multiple antennas to achieve higher resolution through a technique called interferometry.
- ALMA can observe cold gas and dust in space, which are often invisible in optical wavelengths.
- The project is a collaboration between Europe, North America, East Asia, and Chile.
- ALMA helps astronomers study the formation of stars, planetary systems, galaxies, and even black holes.
Review Questions
- What is the primary purpose of ALMA in astronomical observations?
- How does ALMA achieve higher resolution using its multiple antennas?
- In which country and specific desert is ALMA located?
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Related terms
Interferometry: A technique that combines waves from multiple telescopes to produce a higher-resolution image.
Millimeter Waves: Electromagnetic waves with wavelengths between 1 millimeter and 10 millimeters used for astronomical observations.
Chajnantor Plateau: The high-altitude site in the Atacama Desert where ALMA is located.
