An unspecified defect in early model Starlink satellites has prompted SpaceX to preemptively deorbit the units before they potentially fail and become hazards in low Earth orbit. While the company remains confident that the deorbiting of these problematic units will prevent any issues, this incident underscores the challenges and uncertainties in navigating the realm of gigantic satellite networks.
https://gizmodo.com/spacex-to-deorbit-100-starlink-satellites-due-to-detect-1851251676
Source: @KlaatuNectarine