Where is the Perseids meteor shower coming from? Swift–Tuttle Comet has orbital period of 133.28 years. Yet, people say that debris and dust from this comet causes this meteor shower. This does not make any sense. Or do they want to say that from 1992, every year, for 28 years Earth picked up debris left behind so many years ago while passing the August part of orbit? It's logical to assume that all this debris would be exhausted by now...
The comet sheds material each time it get close to the sun. The sun heats this dirty snow ball, the ice evaporates and tears dust and smaller rocks with it.
These dust particles then follow a similar orbit around the sun as the comet. But as they are ejected with some velocity and react differently to the solar wind &amp; radiation, their orbit is slightly different from their parent comet.
Different orbit means generally different orbital velocity and, over time, the particles spread out along the comets orbital path. They form a steam of material that constantly dissipates and is replenished each time the comets approaches perihelion.
And each time the earth passes through the part of the solar system this stream occupies, we see meteor.
Here is a nice interactive animation:
https://www.meteorshowers.org/view/Perseids