File:Crews pour concrete footings, the first step in the construction of a permanent home of the NSF’s SOLIS instrument at Big Bear Solar Observatory in California.jpg
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current | 01:55, 25 February 2023 | ![]() | 4,000 × 3,000 (7.32 MB) | Pavlovtherussian | Uploaded a work by Wenda Cao, Sergey Shumko and Erika Norro, Big Bear Solar Observatory, NSO/AURA/NSF from https://nso.edu/press-release/nsfs-national-solar-observatory-breaks-ground-on-new-telescope-site-in-california/ with UploadWizard |
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