User contributions
- 14:12, 2 October 2019 (diff | hist) . . (+144) . . 2210: College Athletes (→Explanation)
- 18:32, 13 September 2019 (diff | hist) . . (0) . . 2202: Earth-Like Exoplanet (→Transcript)
- 18:28, 13 September 2019 (diff | hist) . . (-3) . . 2202: Earth-Like Exoplanet