SpaceX is dealing with another apparent “runaway” Starlink satellite problem, raising fresh questions about how often these incidents happen as the constellation continues to expand. On March 29, SpaceX reported that Starlink satellite 34343 experienced an anomaly and lost communications while flying at about 560 kilometers above Earth.
When a satellite loses contact at that altitude, the concern is that it can slip into a kind of “zombie” state. In practical terms, that means it may no longer be able to receive commands from the ground or use its ion thrusters to control its orbit. If that happens, atmospheric drag can slowly pull the spacecraft lower over time, increasing the importance of careful tracking as it descends through busier orbital zones.
This is the second Starlink-related incident in a little over three months involving debris tied to an apparent malfunction during operational service. On December 17, Starlink satellite 35956 suffered what SpaceX described as propulsion tank venting, along with around 4 kilometers of orbital decay, and released a small number of trackable objects while at roughly 418 kilometers altitude. SpaceX also labeled that event an anomaly and said it was investigating the root cause, but no public update has been provided since.
For the latest March incident, SpaceX says its current analysis shows “no new risk” to the International Space Station, its crew, or NASA’s upcoming Artemis II mission. The note about the ISS is accurate based on today’s orbital separation: the space station typically orbits around 400 kilometers, well below the 560-kilometer shell where Starlink 34343 was operating when communications were lost.
Any meaningful “crossing risk” would be more likely later, during the satellite’s eventual descent, when orbital paths can begin to overlap more closely. That process can take a long time, which also means agencies have time to monitor and respond as the satellite’s trajectory becomes clearer. SpaceX also points to its passive deorbiting approach, designed so that a non-responsive Starlink satellite will ultimately reenter Earth’s atmosphere and burn up completely, rather than remaining in orbit indefinitely.
Even so, the scale of Starlink makes every anomaly more significant. SpaceX currently operates more than 9,500 Starlink satellites—about 65% of all functional satellites in orbit—and the network is still growing. The December incident revived debate about transparency and international notification practices, and the lack of disclosed root-cause information for either event will likely keep those conversations active.
Notably, within hours of confirming the March anomaly, SpaceX went ahead and launched 29 more Starlink satellites. That contrasts with the response after the December incident, when the company did not launch anything for roughly two weeks.
