User contributions
- 10:56, 9 March 2019 (diff | hist) . . (+145) . . Talk:2121: Light Pollution
- 10:54, 9 March 2019 (diff | hist) . . (+87) . . 2121: Light Pollution (→Explanation)
- 10:50, 9 March 2019 (diff | hist) . . (+74) . . 2121: Light Pollution (→Explanation: Expanded explanation by answering more important question "What holds the stars?" not just "What is space made of?")