DOI :10.26650/PB/SS46PS01.2022.001.012   IUP :10.26650/PB/SS46PS01.2022.001.012    Full Text (PDF)

Satellite Constellations as an Issue in Space Law

Sinan Aliş

Satellite constellations constitute significant threat to ground-based optical astronomy as well as radio astronomy. Thousands of satellites are planned to be placed in low-Earth orbit (LEO), and several hundreds of them are planned for higher orbits such as MEO. International astronomical community has been discussing the issue with its all dimensions; need for proper regulations, national space policies, and international agreements. This contribution is intended to define the issue and its impact on astronomical observations.


  • Report of the 1st Satellite Constellations Workshop, Impact of Satellite Constellations on Optical Astronomy and Recommendations Toward Mitigations, 2020, AAS/NOIRLab/NSF. google scholar
  • IAU CRP document. Recommendations to Keep Dark and Quiet Skies for Science and Society, 2021, CRP-17, IAU/UN- COPUOS, 19 April 2021. google scholar
  • Englert, C. R. et al. (2014). Optical orbital debris spotter. Acta Astronautica, 104, 99−105 google scholar
  • ESO Council Report. (2020). A Report on the Impact of Satellite Constellations, ESO/Cou-1928. google scholar
  • Hainaut, O. R. and Williams, A. P. (2020). Impact of satellite constellations on astronomical observations with ESO telescopes in the visible and infrared domains. Astronomy and Astrophysics, 636, A121. google scholar


Istanbul University Press aims to contribute to the dissemination of ever growing scientific knowledge through publication of high quality scientific journals and books in accordance with the international publishing standards and ethics. Istanbul University Press follows an open access, non-commercial, scholarly publishing.