I am worried about many things. And I think we are already in serious trouble with regards to pollution and climate change.
For this one thing, spy satellites in low Earth orbit, I am not so worried. Without active re-boosts, these orbits tend to degrade quickly, and the junk gets dragged out on a relatively quick timescale.
Medium orbits, however, can last a super long time, and junk up there is a very serious concern.
BTW, as the average global temperature rises, the atmosphere expands, which will degrade the orbits of the lower satellites even quicker!
For this one thing, spy satellites in low Earth orbit, I am not so worried. Without active re-boosts, these orbits tend to degrade quickly, and the junk gets dragged out on a relatively quick timescale.
Medium orbits, however, can last a super long time, and junk up there is a very serious concern.
BTW, as the average global temperature rises, the atmosphere expands, which will degrade the orbits of the lower satellites even quicker!