Discussion
Kessler syndrome refers to
Answer: C
Kessler syndrome is the cascade of collisions in low Earth orbit in which satellite fragments, spent rocket stages and other discarded materials strike one another and create more debris, so option C is right.
It has nothing to do with radio frequency interference, with light pollution, or with the formation of clouds.
The idea was put forward by the NASA scientist Donald Kessler in 1978 and warns that crowded orbits may become unusable for future satellites.
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