User contributions
- 18:18, 14 April 2017 (diff | hist) . . (+244) . . Talk:1812: Onboarding
- 20:00, 8 February 2017 (diff | hist) . . (+288) . . explain xkcd:Community portal/Miscellaneous (→"What if: Hide the Atmosphere" question: new section)
- 17:31, 27 January 2017 (diff | hist) . . (+456) . . Talk:1791: Telescopes: Refractor vs Reflector
- 17:23, 27 January 2017 (diff | hist) . . (-292) . . 1791: Telescopes: Refractor vs Reflector (→Explanation)