Sattelites in LEO without the ability to boost their orbits back up will fall out of orbit in a few years due to natural atmospheric resistance. Exactly how lo

Sattelites in LEO without the ability to boost their orbits back up will fall out of orbit in a few years due to natural atmospheric resistance. Exactly how long it takes depends on the shape and mass of the sattelite. It's of very very low Kessler syndrome risk.