File:SD-epochs.pdf
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![File:SD-epochs.pdf](https://upload.wikimedia.org/wikipedia/commons/thumb/b/b9/SD-epochs.pdf/page1-799px-SD-epochs.pdf.jpg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 11:36, 4 May 2021 | ![]() | 2,133 × 1,600 (4.16 MB) | commons>Cosmologyluke | Cross-wiki upload from en.wikipedia.org |
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