Space Debris: The Growing Threat Above Our Heads

There are currently over 36,000 tracked objects larger than 10 cm in Earth orbit, along with an estimated 1 million objects between 1-10 cm and over 130 million particles smaller than 1 cm. Even a 1 cm fragment can destroy a satellite due to orbital velocities of 7-8 km per second. The 2009 Iridium-Cosmos collision generated over 2,000 trackable fragments, and Chinas 2007 anti-satellite test created over 3,000 pieces of debris that will remain in orbit for decades. The Kessler Syndrome, proposed by NASA scientist Donald Kessler in 1978, describes a cascading chain reaction where collisions create debris that causes more collisions, eventually rendering certain orbits unusable.

We may already be approaching this threshold in the 800-1000 km altitude band. Active debris removal is now being tested: the European Space Agencys ClearSpace-1 mission plans to capture and deorbit a 100 kg defunct rocket part in 2026. Japans ADRAS-J satellite has successfully inspected a large rocket body in orbit. The FCC now requires satellites in low Earth orbit to deorbit within 5 years of mission end, down from the previous 25-year guideline.

Starlink alone has launched over 6,000 satellites, with plans for 42,000 total, fundamentally changing the orbital environment..