Technology & Science

Starlink 35956 Anomaly Creates Debris Field in Crowded Low-Earth Orbit

On 17 Dec 2025 SpaceX lost control of Starlink satellite 35956 when its propulsion tank unexpectedly vented, dropping the craft 4 km and scattering slow-moving debris that will burn up within weeks.

By Priya Castellano

Focusing Facts

  1. Starlink 35956 went silent at 418 km altitude on 17 Dec 2025, its semi-major axis decaying ~4 km after the tank vent.
  2. Independent radar firm LeoLabs catalogued “tens of objects” around the satellite, indicating an internal energetic event rather than an external collision.
  3. SpaceX reports ≈9,300 of >10,000 launched Starlink satellites remain active, the densest constellation ever assembled.

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