the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Framing the Orbital Commons: Public Discourse and LEO Sustainability After the Starlink Gen2 Approval
Abstract. The rapid expansion of satellite mega-constellations in Low Earth Orbit (LEO) is transforming orbital space into a densely populated and increasingly contested environment, raising critical questions about its long-term sustainability. While scientific research has extensively documented risks associated with orbital debris accumulation, collision cascades, and interference with astronomical observations, less attention has been paid to how these risks are communicated and interpreted in public discourse. This study addresses this gap by examining how sustainability-related issues are framed in new media discussions following a key regulatory event: the United States Federal Communications Commission’s (FCC) partial authorization of SpaceX’s Starlink Gen2 constellation on 9 January 2026.
Adopting an exploratory, qualitative approach, the study analyses English-language posts on X (formerly Twitter) collected over a ±10-day window surrounding the FCC decision. Using framing theory as a guiding lens, the analysis focuses on how issues are defined, how causes and responsibilities are attributed, how normative judgments are expressed, and how potential responses are articulated. In parallel, the study examines broader framing orientations, including technological optimism, environmental risk, and neutral or informational narratives, in order to assess the relative prominence of sustainability concerns within the discourse.
The findings indicate that public discussions are dominated by neutral and informational framing, with a strong presence of technologically optimistic narratives that emphasise innovation, connectivity, and economic opportunity. In contrast, environmental risk framing, particularly relating to orbital debris and ecological impacts appears comparatively limited and less systematically developed. Where sustainability concerns do emerge, they are frequently articulated through governance-oriented perspectives, with responsibility assigned primarily to regulatory institutions and industry actors, and proposed solutions centred on technical mitigation and policy oversight rather than systemic environmental change.
These results suggest a disconnect between the complexity of scientific understandings of orbital sustainability and the ways in which these issues are publicly communicated and debated. By highlighting how sustainability is selectively framed in digital discourse, this study contributes to a broader understanding of LEO as a socio-technical system shaped not only by physical and regulatory dynamics, but also by evolving patterns of communication and public interpretation. The findings underscore the importance of integrating communication perspectives into discussions of space sustainability, particularly as commercial activity in LEO continues to expand.
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Status: final response (author comments only)
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RC1: 'Comment on egusphere-2026-1286', Anonymous Referee #1, 22 Jun 2026
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AC1: 'Reply on RC1', Mbus Mbock Masse Melvin, 26 Jun 2026
We sincerely thank Reviewer 1 for the careful reading of our manuscript and for the highly constructive and encouraging comments. We greatly appreciate the reviewer's positive assessment of the manuscript and the recognition of its potential contribution to discussions on orbital sustainability, space ethics, and public discourse.
We have carefully considered all comments and suggestions and have revised the manuscript accordingly. The revisions include: (1) a more detailed explanation of the data collection and search strategy; (2) the inclusion of illustrative examples of posts to improve transparency regarding the dataset; (3) an expanded discussion of potential biases associated with using X as the sole data source; (4) a strengthened implications section incorporating comparative examples from other environmental communication contexts; and (5) correction and verification of all identified reference issues.
A detailed point-by-point response to all comments is provided in the attached supplementary document.
Once again, we sincerely thank Reviewer 1 for the valuable feedback, which has substantially improved the clarity, methodological transparency, and overall contribution of the manuscript.
On behalf of all authors,
Mbus Mbock Masse Melvin
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AC1: 'Reply on RC1', Mbus Mbock Masse Melvin, 26 Jun 2026
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RC2: 'Comment on egusphere-2026-1286', Anonymous Referee #1, 22 Jun 2026
This paper would likely make a welcome addition to discussion of space ethics in the Science and Technology Studies and adjacent fields, and may be of interest to the broader public and the media as well.
It would be helpful to say more about how posts on X were selected. Were the 5 terms listed (“Starlink”, “FCC”, “approval”, “Gen2”, “expansion”) the only ones used? Or were there others? Was an “and” or “or” logical filter used, i.e. was it enough to match one term, or did a post need to match all five (or more) to be selected? It seems surprising that only 268 posts were made matching those search criteria during the 20-day window; SpaceX rocket launches alone typically generate tens to hundreds of thousands of posts on X.
Citation: https://doi.org/10.5194/egusphere-2026-1286-RC2 -
AC2: 'Reply on RC2', Mbus Mbock Masse Melvin, 26 Jun 2026
We sincerely thank the reviewer for this helpful observation. We agree that additional methodological clarification was necessary and have substantially revised Section 3.2 accordingly.
The revised manuscript now provides a more detailed explanation of the data collection procedure. Specifically, we clarify that the study employed an intentionally narrow, event-focused search strategy designed to capture discourse directly related to the Federal Communications Commission (FCC) approval of the Starlink Gen2 expansion rather than broader Starlink or SpaceX discussions. Multiple searches using the core terms "Starlink", "FCC", "approval", "Gen2", and "expansion" were conducted within NodeXL, and the resulting datasets were subsequently merged and deduplicated. Retrieved posts were then manually screened, with only those substantively referring to the FCC regulatory decision retained for analysis.
The manuscript now further explains that this intentionally narrow sampling strategy accounts for the relatively modest corpus size of 268 initial posts during the analytical window, as the study excluded routine launch discussions, promotional content, and unrelated Starlink commentary. The purpose of this approach was to isolate public discourse surrounding the specific regulatory event rather than capture all Starlink-related activity on X.
These clarifications have been incorporated into Section 3.2 of the revised manuscript.
Citation: https://doi.org/10.5194/egusphere-2026-1286-AC2
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AC2: 'Reply on RC2', Mbus Mbock Masse Melvin, 26 Jun 2026
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RC3: 'Comment on egusphere-2026-1286', Theresia Bilola, 30 Jul 2026
This paper is a relevant and potentially valuable contribution that addresses an underexplored aspect of orbital sustainability research. The manuscript is well motivated, theoretically informed, and generally well written. The primary recommendations relate to improving methodological transparency, clarifying coding procedures, resolving minor inconsistencies, and ensuring that broader governance implications remain closely aligned with what can be directly supported by the data. With these revisions, the manuscript would be substantially strengthened. Please see the detailed review in the attached file.
Citation: https://doi.org/10.5194/egusphere-2026-1286-RC3 -
AC3: 'Reply on RC4', Mbus Mbock Masse Melvin, 07 Aug 2026
Dear Reviewer,
Thank you for your thoughtful and constructive comments on my manuscript. I sincerely appreciate the time and effort you devoted to its review.
Please find attached a detailed, point-by-point response describing how each of your comments has been addressed in the revised manuscript. The accompanying response document outlines the revisions made and indicates the corresponding changes incorporated throughout the manuscript.
I am grateful for your valuable feedback, which has helped strengthen the quality, clarity, and rigor of this work.
Sincerely,
Mbus Mbock Masse Melvin
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AC3: 'Reply on RC4', Mbus Mbock Masse Melvin, 07 Aug 2026
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RC4: 'Attachment failed to upload in initial comment', Theresia Bilola, 05 Aug 2026
This paper is a relevant and potentially valuable contribution that addresses an underexplored aspect of orbital sustainability research. The manuscript is well motivated, theoretically informed, and generally well written. The primary recommendations relate to improving methodological transparency, clarifying coding procedures, resolving minor inconsistencies, and ensuring that broader governance implications remain closely aligned with what can be directly supported by the data. With these revisions, the manuscript would be substantially strengthened. Please see the detailed review in the attached file.
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AC3: 'Reply on RC4', Mbus Mbock Masse Melvin, 07 Aug 2026
Dear Reviewer,
Thank you for your thoughtful and constructive comments on my manuscript. I sincerely appreciate the time and effort you devoted to its review.
Please find attached a detailed, point-by-point response describing how each of your comments has been addressed in the revised manuscript. The accompanying response document outlines the revisions made and indicates the corresponding changes incorporated throughout the manuscript.
I am grateful for your valuable feedback, which has helped strengthen the quality, clarity, and rigor of this work.
Sincerely,
Mbus Mbock Masse Melvin
-
AC3: 'Reply on RC4', Mbus Mbock Masse Melvin, 07 Aug 2026
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- 1
General comments
The manuscript presents an analysis of 207 posts to the social media platform X regarding the
US FCC’s approval of SpaceX request to launch an additional 7500 Gen2 Starlink satellites into low Earth orbit (LEO). The analysis uses framing, as previously developed by others, as a lens to view the posts, and finds that neutral and informational framing dominate the posts, with posts showing environmental risk framing much less represented. The manuscript concludes that there is a significant disconnect in the public sphere between the technical and procedural aspects of contemporary space exploration on the one hand and the sustainability and environmental aspects on the other. The author calls for increased integration of different perspectives, including environmental and space sustainability, into public discussion of LEO activity.
The article is well written and clear. The immediate history of development of LEO is reasonably summarized. The analytical context – framing theory – is clearly described, with appropriate references to previous literature on framing as an important tool for understanding public discourse. The methods and analysis techniques are clearly described. The discussion, including of the marginalization of complex and long-term risks of technical and industrial issues noted by previous authors in the environmental communication field, is illuminating and seems justified by the empirical data presented.
The paper would likely make a welcome addition to discussion of space ethics in the Science and Technology Studies and adjacent fields, and may be of interest to the broader public and the media as well. I believe the paper merits publication in EGU GC.
The comments below are relatively minor, but I do recommend at least addressing them.
Specific comments
* Line 280: It would be helpful to say more about how posts were selected. Were the 5 terms listed (“Starlink”, “FCC”, “approval”, “Gen2”, “expansion”) the only ones used? Or were there others? Was an “and” or “or” logical filter used, i.e. was it enough to match one term, or did a post need to match all five (or more) to be selected? It seems surprising that only 268 posts were made matching those search criteria during the 20-day window; SpaceX rocket launches alone typically generate tens to hundreds of thousands of posts on X.
* Providing additional sample posts from X earlier in the manuscript would help the reader understand the nature of the data.
* The manuscript would benefit from some additional discussion of possible intrinsic bias of using X. What are known demographics of X users and posters? How could that affect the measurements and conclusions?
* 5.6, lines 732 and ff: “When sustainability risks remain peripheral in public communication, they are less likely to be integrated into policy prioritisation or regulatory design, potentially reinforcing governance approaches that favour short-term expansion over long-term system stability.” Examples from other fields and case studies would help support this assertion.
* line 766: “When communication emphasises regulatory procedures and technological benefits while limiting the salience of environmental risks, it constrains the scope of public engagement and reduces opportunities for broader accountability.” Examples from other fields and case studies would help support this assertion.
* line 776: “A public that is better informed about both the benefits and risks of space technologies is more likely to participate in discourse that holds institutions accountable and supports policy approaches aligned with long-term sustainability objectives”. Examples from other fields and case studies would help support this assertion.
Technical corrections
* Ostrom 1990: ref is missing:
Elinor Ostrom, Indiana University
Governing the Commons
The Evolution of Institutions for Collective Action
* Kohl et al 2025: DOI link not working, should be:
https://doi.org/10.22323/151320250630102925