PHOTOS: Getting Ready for the World’s Largest Radio Telescope- page 2 | Photos | Smithsonian
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(Babak Tafreshi / Science Source)

PHOTOS: Getting Ready for the World’s Largest Radio Telescope

In Chile’s Atacama Desert, astronomers are preparing for a new array that will stretch across 10 miles

The ALMA

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(ALMA (ESO / NAOJ / NRAO))

The $1.3 billion Atacama Large Millimeter/submillimeter Array (ALMA) radio telescope—the largest ever built—will be inaugurated in March, eventually boasting 66 antennas stretching across ten miles. Chajnantor’s dry, thin atmosphere creates ideal conditions for reception of radio waves from outer space. (The antennas, above, are shown against a long-exposure image of the night sky.)

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