File:The Outstretched Milky Way.jpg
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English: The dust-filled center of our Milky Way galaxy stretches up from the Víctor M. Blanco 4-meter Telescope and one of the SMARTS Consortium telescopes at Cerro Tololo Inter-American Observatory (CTIO) in this Image of the Week. CTIO, a Program of NSF’s NOIRLab, is located at 2200 meters (7200 feet) in the mountains of Chile. Far from major cities, the dark landscape provides American, Chilean, and international researchers clear views of the southern sky. The spectacular green colors in the sky are not due to the aurora borealis, but instead are due to a phenomenon known as airglow. Airglow is not an optical illusion, but a genuine light source that results fromchemical reactions in Earth’s upper atmosphere. It is far too faint to be visible during the daytime, and in most human-inhabited places it is drowned out by light pollution. However, out in the Chilean desert, it is possible to detect it.
Español: En esta Imagen de la Semana, podemos ver el centro polvoriento de nuestra Vía Láctea extendiéndose desde el Telescopio de 4 metros Víctor M. Blanco y uno de los telescopios del Consorcio SMARTS en el Observatorio Cerro Tololo (CTIO), un Programa de NOIRLab de NSF, que se encuentra a 2.200 metros de altura en las montañas de Chile. Alejado de las grandes ciudades, este oscuro paisaje proporciona observaciones óptimas del cielo austral a los investigadores estadounidenses, chilenos y de todo el mundo. Los espectaculares tonos verdes del cielo no se deben a la aurora boreal, sino a un fenómeno conocido como luminiscencia atmosférica o airglow; este brillo en el cielo no es un efecto óptico, sino una fuente de luz genuina causada por las reacciones químicas que suceden en la atmósfera superior de la Tierra. Esta luz es demasiado tenue para ser visible durante el día, y se pierde en la mayoría de los lugares habitados por el ser humano debido a la contaminación lumínica. Sin embargo, se puede apreciar en el desierto chileno debido a sus cielos oscuros. |
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| Source | https://noirlab.edu/public/images/iotw2214a/ |
| Author | CTIO/NOIRLab/NSF/AURA/B. Tafreshi |
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This media was created by the National Optical-Infrared Astronomy Research Laboratory (NOIRLab).
Their website states: "Unless specifically noted, the images, videos, and music distributed on the public NOIRLab website, along with the texts of press releases, announcements, images of the week and captions; are licensed under a Creative Commons Attribution 4.0 International License, and may on a non-exclusive basis be reproduced without fee provided the credit is clear and visible." To the uploader: You must provide a link (URL) to the original file and the authorship information if available. |
  This file is licensed under the Creative Commons Attribution 4.0 International license.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 18:07, 22 June 2023 | | 6,412 × 8,099 (16.18 MB) | C messier (talk | contribs) | full size |
| 21:46, 30 January 2023 |  | 1,280 × 1,617 (655 KB) | Yiseth Romero (talk | contribs) | Uploaded a work by CTIO/NOIRLab/NSF/AURA/B. Tafreshi from https://noirlab.edu/public/images/iotw2214a/ with UploadWizard |
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