Introduction and conclusion.

                     Space debris
Space debris is increasingly a very common problem nowadays. If we look for information on the internet we can see lot of news about new objects fell down from the sky. This rubbish is caused in many times for the human being and his experiments. We must be more aware of the effects of throwing this kind of devices to the space because sooner or later it can return to the earth.

To sump up, we are not the centre of the world and even we don't see the effects that these objects have in the space, it's very important that we moderate this emission of researches with no return of the devices.