User contributions
- 16:38, 4 September 2021 (diff | hist) . . (0) . . Talk:2510: Modern Tools (Corrected wikipedia link from 404 (Darwinian Poetry → Darwinian poetry))
- 12:49, 1 September 2021 (diff | hist) . . (+117) . . 2509: Useful Geometry Formulas (→Explanation)
- 11:52, 3 July 2021 (diff | hist) . . (+654) . . Talk:2484: H-alpha (more on the use of H-alpha filters)