One arm of the VLA

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One arm of the VLA

The southwest arm of the three-armed Very Large Array is dotted with antennas for miles across the Plains of San Agustin in New Mexico. The VLA antennas are picked up and hauled along rail tracks several times a year to sharpen or deepen its view of the radio cosmos. At its widest separation, the outlying VLA antennas are 22 miles apart. The yellow Antenna Assembly Building is near the middle of this photo.

Credit: NRAO/AUI/NSF

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