Why is there a meteor shower?

Meteor shower refers to the formation of meteors that are broken in the sky for some reason.

Under the power of outer space, these scattered fragments swept across the earth, resulting in the popularity we saw. When the number of broken stars is huge, there is a meteor shower.

There are many comets in the solar system. When comets are close to the sun, loose comets are "caused" by substances on the surface of the sun, forming countless "tumors". These "tumors" were finally thrown out, that is, split. These small clumps split from comets are called "meteoroids".

It is the location where the meteor falls, which may just deviate from the observation position, so there is no meteor shower. Is there a building blocking the line of sight at the observation point? In the city, there are tall buildings everywhere. In this state, it is difficult to observe the meteor shower. It is necessary to observe the meteor shower in a wide field of vision.