Throwing something from space at the earth, how can it become a meteor?

First of all, I recommend two interchangeable works by the famous Soviet scientist Kang Chiokovsky, the "father of space flight". In 217 and the following years, a group of scientists and technicians from different countries took their own rocket ships to travel in space. Fly around the earth, then land on the moon, then continue to fly near Mars, and finally return to the earth. Encouraged by their brave exploration spirit, people on the earth also immigrated to outer space in large numbers and lived in greenhouse cities around the earth orbit. Meteor shower is an astronomical phenomenon in which many meteors are emitted from a so-called radiation point in the sky in the night sky. These meteors are fragments called meteoroids in the universe, which are projected into the earth's atmosphere at a very high speed when running in parallel orbits. Most meteoroids are smaller than gravel, so almost all meteoroids will be destroyed in the atmosphere and will not hit the surface of the earth. Fragments that can hit the earth's surface are called meteorites. A particularly large number or unusual meteor shower will be called "meteor outburst" or "star shower", and more than 1, meteors may appear every hour. Among all kinds of meteor phenomena, the most beautiful and spectacular is the meteor shower. When it appears, thousands of meteors radiate from a certain point (radiation point) in the sky like flashing ribbons. Meteor shower is named after the constellation where the radiant point is located, such as andromedids and Leonid meteor shower. There have been many famous meteor showers in history: Lyra meteor shower, Aquarius meteor shower, Leonid meteor shower and Andromeda meteor shower. China recorded the Lyra meteor shower in 687 BC, which is the earliest record of meteor shower in the world.

Meteor showers appear regularly, and they often recur on roughly the same day every year, so they are also called "periodic meteors". You can't litter at will on earth, how can you throw things in space?