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File:Stars Rain over ALMA.jpg

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Summary

Description
English: This photo, courtesy of the National Astronomical Observatory of Japan (NAOJ), shows one of the 66 antennas which form the Atacama Large Millimeter/submillimeter Array (ALMA), located on the Chajnantor Plateau in the Chilean Andes. Above the antennas, stars appear to rain down on the site. The downpour of stars is the result of a long exposure capturing their trail across the sky as the Earth rotates. The plateau on which ALMA is located was actually chosen in part due to its dryness. Radio waves can easily penetrate the Earth’s atmosphere, but moisture in the air absorbs them and degrades the quality of the observations. So just as well that this is not real rain! ALMA is an international partnership between Europe, North America and East Asia in cooperation with the Republic of Chile.
Date
Source http://www.eso.org/public/images/potw1514a/
Author K. Ashitagawa (NAOJ), ESO

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6 April 2015

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Date/TimeThumbnailDimensionsUserComment
current15:14, 14 February 2024Thumbnail for version as of 15:14, 14 February 20242,141 × 1,488 (864 KB)C messierfull size
14:58, 10 April 2015Thumbnail for version as of 14:58, 10 April 20151,280 × 890 (272 KB)JmencisomUser created page with UploadWizard

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