1. Dark Skies: Space Expansionism, Planetary Geopolitics, and the Ends of Humanity;Deudney,2020
2. The Role of Space in Driving Sustainability,2022
3. Statista, “Number of active satellites from 1957 to 2021,” https://www.statista.com/statistics/897719/number-of-active-satellites-by-year/
4. Implications of a growing spaceflight industry: climate change;Ross;J. Space Saf. Eng.,2022
5. The White House, “United States space priorities framework,” December 2021.