In my world-building project, a decades long orbital conflict has resulted in the trashing of Earth's orbit with massive amounts of debris, shipwrecks, and space junk. However, after an anomalous terraforming event, all this space junk magically consolidated into one large ring that circled the earth around the equator.
Is it possible to create a ring out of space debris that is visible from the surface? I am aware that the mass required to create a ring with the likes of Saturn would be practically unfeasible, and that the ring would likely prevent space exploration and result in space debris showers, but would such a ring be able to last for longer than, say, 100 years? Is there a way to calculate/derive how long such a ring may last until it is eventually destroyed by gravitational forces of both the moon and sun?