Expert Warns Starlink Satellites Are Falling to Earth Daily—Should We Be Worried?

Micah Hanks·
Starlink
Artist’s concept of a Starlink satellite in orbit (Credit: Wikiideas1/CC 4.0).

Welcome to this edition of The Intelligence Brief… This week, new data reveals that up to four Starlink satellites are falling to Earth each day, a growing trend that could have long-term implications for both orbital safety and Earth’s atmosphere. In our analysis, we’ll be looking at 1) what’s driving the sharp rise in Starlink reentries and how many more are expected in the coming years, 2) why scientists like Harvard–Smithsonian astronomer Jonathan McDowell say these events pose minimal risk to the public but warrant closer scrutiny, 3) how uncontrolled reentries from larger spacecraft still present a serious hazard, and 4) what environmental impacts satellite burn-ups may have as megaconstellations continue to expand.

Quote of the Week

“There is a risk from reentering debris that I am not comfortable with.”  

– Jonathan McDowell, Harvard–Smithsonian Center for Astrophysics

RECENT NEWS from The Debrief

Starlink Satellites Keep Falling to Earth, Space Expert Warns

Up to four Starlink satellites are currently falling to Earth every day, according to one veteran space tracker who warns that this sharp increase in deorbiting activity from Elon Musk’s rapidly expanding space internet architecture could spell trouble here on Earth.

The concerning new data was provided by astronomer Jonathan McDowell of the Harvard–Smithsonian Center for Astrophysics, who reports that throughout 2025 an average of one or two Starlink satellites have fallen to Earth daily—and perhaps most concerning of all, that figure is expected to rise to more than double that amount as more of the spacecraft are delivered to orbit in the coming years.

Current estimates indicate that as many as five daily reentries could soon become the new norm as SpaceX continues to deploy thousands of new satellites as part of its Starlink constellation.

A Sharp Rise in Reentry Events

Over the last several months, striking videos have appeared online that document the growing number of reentry events that are occurring around the world, which appear to be increasing directly in proportion to the growing number of Starlink satellites that are being sent to orbit.

Despite the concern these reentries sometimes generate, most experts maintain that they pose no direct danger to people on the ground.

That isn’t to say there aren’t a few cases where materials from spacecraft haven’t made their way to Earth. Last summer, an odd-looking piece of material discovered on a remote property in Western North Carolina turned out to be the remnants of a SpaceX Dragon Capsule that survived reentry.

“SpaceX has confirmed the re-entry of Dragon spacecraft trunk hardware to NASA following its service missions to the International Space Station,” a NASA official said in a statement following the incident, of which The Debrief was among the first to identify as possible wreckage from a SpaceX mission.

Designed with a lifespan of around five years, Starlink satellites are designed to completely burn up during reentry, although recent events seem to indicate that this may not always be the case 100% of the time.

This could prove to be problematic, especially since of the estimated 20,000 objects that are currently being tracked in low-Earth orbit, close to 12,000 are active satellites, and 8,500 of those belong to the steadily-growing Starlink fleet.

Should We Be Worried?

Despite the concerns surrounding such incidents, McDowell said he isn’t losing sleep about Starlink reentries themselves, although there are other factors that experts like him are focused on.

“I’m not worried about the Starlink reentries from the point of view of debris hitting the ground,” McDowell told The Debrief in an email. “They pretty much melt completely,” he said, while noting that “there is some question about what effect that might be having on atmospheric chemistry, though.”

Still, McDowell says that the growing number of reentries we’ve seen over the last several months raises some concerns.

“In general however, considering also non-Starlink reentries, there is a risk from reentering debris that I am not comfortable with,” McDowell told The Debrief, “and I believe we should move to banning uncontrolled reentry from large (1 ton plus) space objects,” specifically referring to satellites and rocket stages capable of surviving reentry and making their way to Earth.

Future Outlook

So while Starlink’s controlled deorbits may not endanger the public, scientists are becoming more aware of their potential environmental impact, and other problems they could represent in the future. For instance, the burn-up process releases particles such as aluminum oxide into the atmosphere, which could contribute to warming effects or chemical changes at high altitudes.

In the years ahead, it will remain to be seen what their broader effects on Earth’s environment and orbital chemistry could be. However, what is clear right now is that as more spacecraft are being placed in orbit, any problems that we are beginning to see right now will only increase over time, and could present additional challenges on down the road as Earth’s orbital space becomes increasingly cluttered.

That concludes this week’s installment of The Intelligence Brief. You can read past editions of our newsletter at our website, or if you found this installment online, don’t forget to subscribe and get future email editions from us here. Also, if you have a tip or other information you’d like to send along directly to me, you can email me at micah [@] thedebrief [dot] org, or reach me on X: @MicahHanks.

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