Is space debris really dangerous?

Space debris is really dangerous. Space debris is simply junks, garbage or waste orbiting Earth. Humans activities are something that is causing space debris. So many things like satellites have been launched into the space, most of those satellites have spent a very long time in the space and are dead already. Since object launched into the space still have a greater tendency to come to the surface of the Earth, those already dead satellites and other things are now finding their ways into the earth.

Concerns have been raised about the harmful effects of all these space debris. For example, imagine walking along the road and something suddenly hits you right on your head, if that thing is heavy enough, it can kill you. Space debris are harmful, when a space debris hit an aircraft with so much speed, it can lead to accident and that's why most aircrafts are using radar to dodge space debris.