*** THIS PICTURE MAY NOT BE USED TO STATE OR IMPLY THE ENDORSEMENT BY NRAO, AUI OR NSF OF ANY COMPANY OR PRODUCT *** Aerial view of the Very Large Array (VLA) radio telescope near Socorro, New Mexico. The VLA is the world's largest radio telescope array. It consists of 27 dish antennae, each 25 m in diameter, which can be moved to various positions along the arms of a Y-shaped railway network. Two of the arms are 21 km long, the third is 19 km. The 27 antennae are spread along the full length of the arms for high-detail mapping of small, bright radio sources. Maps of larger, faint sources are made with the antennae brought together on short, 0.6 km arms. Intermediate configurations have arm lengths of 1.9 (seen here) and 6.4 km. The yellow structure is the Antenna Assembly Building. This picture may not be used to state or imply the endorsement by NRAO, AUI or NSF of any company or product.