Donald J. Kessler

Donald J. Kessler is an American astrophysicist best known for his work in space debris research. He gained prominence for proposing the "Kessler Syndrome," a scenario in which the density of objects in low Earth orbit is high enough that collisions between them could create a cascade of debris, making space operations increasingly hazardous. This concept highlights the importance of space debris management and has significant implications for satellites, space missions, and future space exploration. Kessler's work has raised awareness about the increasing risks of operating in Earth's orbit due to human-made space debris.