this post was submitted on 01 Mar 2026
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Little bit of a nitpick but Kessler syndrome doesn't care about how many satellites you have, and more about how many dead satellites you have hanging around on random orbits. You could put hundreds of millions of satellites in space as long as you had some sort of decommissioned program. You can always send up rockets if you can just move the satellites out of the way / know where they are.
Dead satellites do add a much larger risk than satellites that can be steered, sure. If we stopped steering all our satellites right now, I believe it'd only take a few days before a collision occurred.
However, every satellite in orbit adds to the risk, especially if a chain reaction starts happening and it becomes very hard to avoid the shrapnel flying around. Or if a once-in-a-century-type solar flare takes out a bunch of satellites.
Edit: Basically, the best way to prevent Kessler Syndrome from occurring, is to keep the number of satellites in orbit below the threshold where it could occur.
In the future cleaning up our LEO zone will be a problem like cleaning up the rubbish in the oceans.