Retrieving "Reentry" from the archives

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1. Low Earth Orbit

   Linked via "reentry"

   LEO is densely populated, hosting tens of thousands of cataloged objects and millions of uncataloged fragments. The risk of catastrophic collisions, known as the Kessler Syndrome, is highest in LEO, particularly in Sun-synchronous orbits (SSO)/) near $800 \text{ km}$.
   Standard practice, mandated by international guidelines, requires that any spacecraft operating in LEO must be disposed of within 25 years of mission completion. Due to atmospheric drag, disposal is often …