The short version

• International Dark-Sky Association v FCC, No. 22-1337, was decided by the D.C. Circuit on 12 July 2024.
• The order under review was the FCC’s conditional authorisation of 7,500 second generation Starlink satellites, FCC 22-91.
• IDA got through the standing door on aesthetic injury to stargazing members, where a competitor had failed two years earlier on debris risk.
• On the merits the FCC won. Its categorical exclusion for satellite licensing survived arbitrary and capricious review.

Two D.C. Circuit decisions, two years apart, decide almost everything about whether environmental law can be used to slow down a satellite constellation. Read together they produce an awkward result: the courthouse door is open to the right plaintiff, and there is almost nothing useful on the other side of it.

The first case, and a correction worth making

A great deal of commentary refers to a 2023 D.C. Circuit decision in Viasat v FCC on the Starlink Gen2 environmental review. There is no such decision. The confusion is worth clearing up before going further.

Viasat, Inc. v. FCC, 47 F.4th 769, was decided on 26 August 2022, Nos. 21-1123 and consolidated cases, opinion by Judge Katsas. The order under review was the FCC’s Second Modification Order permitting SpaceX to lower part of its first generation constellation, not Gen2.

The court never reached NEPA. Viasat’s space debris theory failed on Article III standing. A petitioner must show both that the risk is substantial and that the challenged action substantially increases it, and the causal chain, a SpaceX satellite is struck, a debris field is created, a Viasat satellite is struck, did not cross the line from speculative to certainly impending. Viasat’s economic injury from orbital crowding fell outside NEPA’s zone of interests. A co-petitioner failed on conclusory affidavits.

The lesson operators took from Viasat was that debris risk is not a viable standing theory for a commercial competitor.

The second case

International Dark-Sky Association, Inc. v. FCC, No. 22-1337, was decided on 12 July 2024 by a panel of Judges Rao, Childs and Senior Circuit Judge Ginsburg, opinion by Judge Rao.

The order under review was the FCC’s partial grant of 1 December 2022, FCC 22-91, conditionally authorising 7,500 second generation Starlink satellites.

Standing

IDA succeeded where Viasat had failed, and the difference is instructive. It did not argue debris. It argued light pollution, and it established associational standing on aesthetic injury to members whose stargazing is affected by satellite brightness. The injury was concrete, traceable to the authorisation, and germane to the organisation’s purpose.

That is a real doctrinal opening. An environmental or astronomical organisation with affected members can challenge a constellation authorisation. A competitor complaining about congestion cannot.

Merits

Having got through the door, IDA lost.

The Commission had applied its categorical exclusion under 47 CFR 1.1306(a), which treats satellite licensing as a category of action that does not individually or cumulatively have a significant effect on the human environment, and had found no extraordinary circumstances requiring an environmental assessment.

The court held that was reasonable. In upholding the finding it pointed to ESA studies of atmospheric reentry effects, SpaceX’s mitigations including lower operating orbits and brightness reduction measures, and the FAA’s programmatic environmental assessment.

What the two cases add up to

Three propositions survive.

First, a competitor cannot use orbital debris risk to force NEPA review of a rival’s constellation. Viasat closes that.

Second, an environmental or astronomical organisation can get standing on aesthetic and dark skies grounds. Dark-Sky opens that.

Third, the FCC’s categorical exclusion for satellite licensing survives arbitrary and capricious review, and the Commission’s reliance on external studies and operator mitigations was enough. Constellation NEPA challenges are very hard to win on the merits.

The pressure the cases created

The categorical exclusion has been a target for longer than the litigation. GAO report GAO-23-105005, published in November 2022, recommended that the FCC reexamine its environmental review process for large constellations, noting that the exclusion had not been reviewed since 1986. The technology it was written for and the technology it now covers are not comparable.

The Commission’s response has run in the opposite direction from what the GAO had in mind.

In August 2025 the FCC adopted an NPRM, FCC 25-47, in WT Docket No. 25-217, modernising its NEPA rules in light of the 2023 Fiscal Responsibility Act amendments and Executive Order 14154. The proposal tentatively concludes that space based operations should be excluded from NEPA altogether as extraterritorial activities whose effects lie outside US jurisdiction, and would replace the broad categorical exclusion with an enumerated list.

That is a larger move than the categorical exclusion. A categorical exclusion is a determination that a class of action does not normally have significant effects, and it can be rebutted by extraordinary circumstances, which is what IDA argued. A conclusion that NEPA does not reach the activity at all removes the analysis entirely.

The American Astronomical Society has opposed. As at August 2026 no final order had been issued in the docket, so it remains pending.

The FAA is moving in parallel. Its NPRM of 30 July 2026 would waive NEPA and twelve other environmental statutes for launch and reentry licensing. We cover it in our piece on Part 450.

Where the next fight is

If both proposals are finalised, domestic environmental review largely exits US space regulation, and the constraint moves elsewhere.

Two places look likely. The ITU, where WRC-27 agenda item 1.16 addresses NGSO interference into radio astronomy and possible recognition of radio quiet zones for ALMA in Chile and the SKA in South Africa. And Europe, where the ENVI committee’s opinion on the EU Space Act pushes for mandatory environmental impact assessment and lifecycle responsibility.

There is also a newer front. Environmental groups have petitioned the FCC to pause applications for orbital data centre constellations pending environmental review, which would test the extraterritoriality theory against a class of mission with a very different profile.

The short version

• The FCC replaced the 25 year post-mission disposal guideline with a five year maximum in Second Report and Order FCC 22-74, adopted 29 September 2022.
• It is codified at 47 CFR 25.283(e) and became effective 9 September 2024, with compliance required from 29 September 2024.
• It applies to spacecraft ending their mission in or passing through low Earth orbit below 2,000 km and planning uncontrolled reentry, including non-US systems granted US market access.
• Satellites already in orbit are grandfathered. Anything launched after 29 September 2024 is not.

For twenty five years the working number in orbital debris mitigation was twenty five years. A satellite in low Earth orbit was expected to clear the region within a quarter century of the end of its mission. That figure came out of NASA analysis in the 1990s and worked its way into the Inter-Agency Space Debris Coordination Committee guidelines, then into national practice.

It was a reasonable number for a world launching dozens of satellites a year. It is not a reasonable number for a world launching thousands.

What the rule says

The FCC’s Second Report and Order, FCC 22-74, was adopted on 29 September 2022 in IB Docket Nos. 18-313 and 22-271. The core change is short: for the spacecraft it covers, post-mission disposal must be completed as soon as practicable and no more than five years after the end of mission.

The obligation is codified at 47 CFR 25.283(e), with parallel amendments for experimental licences at 47 CFR 5.64 and amateur operations at 47 CFR 97.207.

Three limits on scope matter.

Orbit. It applies to space stations that will terminate their mission in, or pass through, low Earth orbit below 2,000 km, and that plan uncontrolled atmospheric reentry. Geostationary disposal continues to be handled by the graveyard orbit requirement, which is a separate obligation and the one DISH failed, as we discuss in our case note on that consent decree.

Reach. It applies both to systems licensed by the FCC and to non-US systems granted access to the US market. This is the important commercial point. A non-US constellation that wants to sell service in the United States takes on the obligation.

Timing. The order was adopted in September 2022 but the rule became effective on 9 September 2024 with compliance required from 29 September 2024, following the standard Paperwork Reduction Act sequence. Satellites already on orbit are exempt. Systems that were authorised but not yet launched had a two year grandfathering window running from adoption. Anything launched after 29 September 2024 complies or does not fly.

Why five years and not zero

Five years is not a physics number. It is a compromise between two positions.

Operators argued for a longer window on cost grounds. Deorbit capability is mass, mass is money, and for a cubesat the propulsion needed to guarantee a rapid deorbit can be a meaningful fraction of the spacecraft.

Debris researchers argued that even five years leaves a long tail. The relevant risk is not one dead satellite. It is the aggregate population of uncontrolled objects in the shells where constellations operate, and the probability that any two of them meet.

The Commission landed on five years plus a “as soon as practicable” obligation, which does real work. An operator that can deorbit in one year cannot elect to take five.

What it means for an application

For most operators the rule does not change the application form so much as the engineering that has to sit behind it. Three things need to be demonstrable at filing.

Disposal capability

Either propulsive deorbit, a drag device, or an orbit low enough that natural decay does the job inside five years. Natural decay is the cheapest route and it is why so many smallsat constellations cluster below about 550 km. Above roughly 600 km, passive compliance stops being realistic.

Reliability

The FCC expects a stated post-mission disposal reliability. If a percentage of the constellation is going to fail before disposal, that has to be in the analysis, and for large constellations a small failure rate is a large absolute number.

Casualty risk

Uncontrolled reentry raises human casualty risk on the ground. The working threshold used across the US agencies is one in ten thousand for a given reentry event, and design for demise is the usual answer.

Where the FCC has gone since

The five year rule now sits inside a much larger overhaul. In October 2025 the Commission proposed replacing Part 25 wholesale with a new Part 100, and on 22 July 2026 it adopted a Report and Order, FCC 26-47, doing exactly that.

The headline changes for operators are procedural rather than substantive on debris: a uniform 15 day public notice period, a 30 day deadline for the Commission either to put an application on public notice or say what is missing, a 60 day decision deadline after comments close, a stated presumption in favour of granting conforming applications, voluntary annual NGSO processing rounds, $10 million surety bonds for processing round applicants declining to zero at 90 percent deployment, and 20 year licence terms as standard.

Part 25 remains in force until the Space Bureau announces the effective date of Part 100 by public notice. Until then, cite Part 25.

The honest assessment

The five year rule is the most consequential unilateral debris measure any regulator has taken, and it was taken by a communications regulator using its licensing power rather than by a space agency or a treaty body. That is worth sitting with.

It also shows the limits of that route. The FCC can only reach systems it licenses or that want US market access. It cannot reach a constellation that never sells into the United States, and it has no jurisdiction over the objects already up there, which is where the accumulated risk lives.

The short version

• On 2 October 2023 the FCC Enforcement Bureau entered a consent decree with DISH Network, DA 23-888, including a $150,000 civil penalty.
• The satellite was EchoStar-7, a direct broadcast spacecraft in geostationary orbit.
• DISH’s approved plan required retirement to roughly 300 km above the geostationary arc. It reached about 122 km.
• It was the first orbital debris enforcement action of its kind, and it settled a point that had been theoretical until then: a debris mitigation plan filed with an application is an enforceable licence condition.

For years the standard advice on orbital debris compliance ran something like this. The rules are real, but enforcement is unlikely, and the practical consequence of a disposal shortfall is reputational rather than financial.

That advice stopped being right on 2 October 2023.

What happened

EchoStar-7 was a geostationary direct broadcast satellite. Under the orbital debris mitigation plan DISH had filed with the FCC, and which formed part of its authorisation, the satellite was to be retired to a graveyard orbit approximately 300 kilometres above the geostationary arc at end of life.

Graveyard disposal is the standard practice for geostationary spacecraft. The arc at 35,786 km is a single ring and a finite resource. A dead satellite left in or near it is a permanent hazard to the working satellites around it, and unlike a low Earth orbit object it will not decay.

DISH began the retirement manoeuvre and found it did not have enough propellant to complete it. The satellite ended up at roughly 122 kilometres above the arc, well short of the required altitude and in a regime where it could pose a debris and collision risk.

The legal move

The Enforcement Bureau’s Order and Consent Decree, DA 23-888, found violations of the Communications Act, the Commission’s rules, and the terms of DISH’s licence.

That third limb is the one that mattered. The disposal plan was not guidance and it was not a policy aspiration. DISH had filed it, the Commission had relied on it in granting authority, and it was therefore a condition of the licence in the same way as a power limit or a coverage obligation.

The consent decree included an admission of liability, a compliance plan, and payment of a $150,000 civil penalty.

Why the number is not the point

$150,000 is not a meaningful sum to DISH Network. Anyone reading the penalty as a deterrent has misread the case.

The significance is elsewhere, in three parts.

The theory was tested

Before October 2023 it was an academic proposition that end-of-life disposal commitments were enforceable. After it, it was a documented outcome with an admission of liability attached. That changes how the commitment is drafted, reviewed and disclosed.

Fuel margin became a compliance question

The failure here was not a decision to skip disposal. It was running out of propellant. Fuel budgeting at end of life is an engineering trade-off between extending revenue service and retaining disposal margin, and every geostationary operator makes it.

After DISH, that trade-off has a regulatory dimension. An operator that stretches service life and then cannot complete disposal is not merely unlucky. It has breached a licence condition, and the decision to extend service is documented in its own records.

It travels

The reasoning is not specific to geostationary orbit or to DISH. Any disposal or debris commitment filed with any FCC application is exposed to the same analysis, including the five year post-mission disposal obligation for low Earth orbit spacecraft that took effect for launches after 29 September 2024. We cover that rule in a separate piece.

What it did not decide

It is worth being precise about the limits, because the case gets over-read.

It was a consent decree, not a litigated decision. There is no reasoned opinion working through the elements, no contested findings and no appellate treatment. Its authority is as a statement of enforcement posture, not as precedent in the strict sense.

It says nothing about liability to third parties. Nobody was harmed by EchoStar-7’s position. Had another operator suffered damage, the route would have been the Liability Convention’s fault standard between states, which is a very different and much harder problem, as we discuss in our piece on debris liability.

And it remains, as at August 2026, the only enforcement action of its kind. Searching for a comparable FCC space debris or space licensing enforcement action in 2025 or 2026 turns up nothing at the same level. One case in nearly three years is a signal, not a programme.

The practical takeaway

For operators, three things follow.

First, treat the debris mitigation plan in an application as a contractual commitment, because functionally that is what it is. Draft it with the same care as a covenant, and do not describe capability you are not confident of retaining.

Second, build disposal margin into the fuel budget as a hard reserve rather than a target, and document the reserve policy. If a decision is later taken to draw on it, that decision should be recorded and its regulatory consequence considered at the time.

Third, if disposal is going to fall short, the position is better with early disclosure to the Bureau than with a completed manoeuvre and a subsequent investigation. The consent decree route exists precisely because the Commission prefers cooperation to litigation.