Don't lose sleep over reports of 260 Starlink satellites deorbiting

SpaceX Starlink

SpaceX precocious submitted nan semi-annual study for its outer constellation to nan Federal Communications Commission (FCC), revealing that it deorbited 260 Starlink satellites complete nan people of six months. From December 2025 until May 2026, it brought down 176 first-generation Starlink satellites and 84 of its bigger second-generation ones. 

While 260 sounds for illustration a lot, it's not different for nan institution to deorbit that galore wrong a six-month period. It wasn't moreover nan largest number of satellites it deorbited wrong a akin timeframe. In 2024, SpaceX identified a common rumor successful a mini organization of version-one satellites that could summation nan probability of failure. It deorbited 406 satellites successful consequence to that uncovering and followed that up with astir 500 satellites from December 2024 to May 2025.

Starlink satellites were designed to pain up erstwhile they re-enter our planet's atmosphere. To forestall accidents, however, nan institution typically deorbits its satellites complete unfastened oceans and distant from populated islands and locations pinch dense aerial aliases maritime traffic. After all, 1 accidental collision could person a immense effect connected nan outer broadband industry. To beryllium capable to target circumstantial locations for re-entry, SpaceX maintains cognition power down to very debased altitudes of astir 125 km.

However, SpaceX admitted that its satellites do person components that are apt to past re-entry without afloat disintegrating. Those components typically person precocious pouring temperatures: For nan Starlink V2 mini satellites, for instance, nan institution believes silicon from their star cells could past atmospheric burn. The institution predicts that only astir 5 percent of its satellites' wide could past re-entry, and that those materials are bound to autumn successful very mini fragments pinch negligible effect energy. In different words, moreover if immoderate parts of its satellites don't pain up successful nan atmosphere, they'll apt autumn into nan water and make but a mini splash.

A captious facet of sustainable outer creation is demisability, which ensures that satellites afloat break up and pain up during atmospheric reentry.

To afloat understand nan demise characteristics of its designs, Starlink does experimental testing to crushed its analysis, such... pic.twitter.com/Fcvy1vC7Aw

— Starlink (@Starlink) February 27, 2025

Instead of waiting for its satellites to neglect and autumn connected their own, SpaceX takes a proactive approach. "Controlled, propulsive deorbit is overmuch shorter and safer than a comparable uncontrolled, ballistic deorbit from an balanced altitude and allows each Starlink satellites to support maneuverability and collision avoidance capabilities during nan descent," it explained.

There's nary group wave for Starlink deorbits, but they're a beautiful communal occurrence owed to nan size of nan broadband service's constellation. According to outer search level Orbital Radar, location are presently much than 9,500 progressive Starlink satellites retired there, providing customers pinch net sum moreover successful distant locations. In nan future, SpaceX is bound to person a batch much satellites successful orbit, and not conscionable those meant to service Starlink customers. It precocious revenge an exertion pinch nan FCC to launch a cardinal satellites to create an orbital information halfway for SpaceXAI.

In its Commitment to Space Sustainability document, nan institution explained that its satellites orbit astatine altitudes beneath 600 kilometers and that nan atmospheric resistance astatine those altitudes will deorbit a outer people wrong 5 years. It's besides worthy noting that nan FCC adopted a norm successful 2022 that requires Low Earth Orbit outer operators to deorbit their satellites wrong 5 years of ngo completion, successful bid to trim nan maturation of orbital debris.

Earlier this year, Michael Nicolls, nan VP for Starlink Engineering astatine SpaceX, announced that nan institution is lowering nan orbit of each satellites presently flying astatine astir 550 kilometers to 480 kilometers passim 2026. Why? Well, Nicolls said doing truthful will amended outer information successful respective ways. The number of abstraction debris and planned outer constellations is "significantly little beneath 500 kilometers," he said, "reducing nan aggregate likelihood of collision." Further, it will beryllium faster and quicker to deorbit satellites from nan little altitudes. SpaceX proprietor Elon Musk said that it will let Starlink to service a higher density of customers, arsenic well.

Well, that's what scientists are still trying to fig out. The number of satellites successful orbit will only proceed to grow, arsenic some American and Chinese companies motorboat them successful large batches for their mega-constellations. In nan US, there's Amazon, speech from SpaceX, which is besides building a constellation for its Leo broadband service.

As Harvard Climate Brief explains, erstwhile a satellite's integrated materials, for illustration carbon-fiber composites, pain up, they merchandise achromatic c particles, aliases what's simply known arsenic soot. At nan moment, their effect connected nan atmosphere, if any, is still unclear. Scientists person besides raised concerns astir really nan aluminum utilized successful outer building could move into particles of aluminum oxide erstwhile it burns up. Those particles could person ambient chlorine into its highly reactive form.

"Chlorine is 1 of nan cardinal actors successful nan ozone hole," said John Dykema, an applied physicist astatine Harvard School of Engineering and Applied Sciences. "And truthful if you adhd a caller aboveground that converts existing chlorine into reactive and free extremist forms, that will besides beforehand ozone loss." It doesn't look to beryllium a origin for interest conscionable yet, but Dykema said that if aluminum oxide successful nan ambiance continues to accumulate owed to much predominant outer deorbits, it could slow our ozone layer's recovery, which started erstwhile chlorofluorocarbons were phased retired successful 1987.