Always say, what meteor shower, how to tell?

Meteor shower is the result of the friction between meteoroids and the earth's atmosphere (meteoroids can be asteroids in the asteroid belt). Meteor swarms are often produced by fragments of comets, so the orbits of meteor swarms are often related to the orbits of comets. Meteor showers are formed by swarms of meteors. A meteor shower looks like a falling meteor in the night sky. This point or this small sky area is called the radiation point of meteor shower. Meteor shower is usually named after the constellation in the sky where the radiant point of meteor shower is located to distinguish meteor showers in different directions. For example, every year165438+1October 1 7 or so, the radiant point of the meteor shower is in Leo, so it is named Leonid meteor shower. Orion meteor shower, Aquarius meteor shower and Perseid meteor shower are also named in this way. A single meteor is random in direction and time, and there is no radiation point at all. This kind of meteor is called accidental meteor. An important feature of the essential difference between meteor shower and accidental meteor is that the reverse extension lines of all meteors intersect at the radiation point.