Seems a film already seen, yet the story – quite real – is about to repeat itself a year away from the last time. The first stage of the Chinese long March-5B rocket is in uncontrolled fall towards the earth. The rocket had been successfully launched on 29 April last, from wenchang (in the Chinese province of Hainan), bringing in the low Earth orbit the Chinese shuttle “heavenly harmony” for a unmanned test flight.

Even now estimates and forecasts are multiplied on the impact area and when it happens. Where and when debris could hit the landseveral websites (e.g. Given the speed, it is difficult to predict exactly what the impact point will be: even a small variation in the path could change the affected area a lot.

The reality is that it is very complicated to establish where exactly the debris will fall: the range of possibilities ranges from new york, madrid and pechino, up to the southern Chile and the new zelanda. However, there is a maximum estimate on the date of impact: could take place during the next week – indicatively towards May 10. A year later we still talk about the same event that concerns the same rocket, but how is it possible?

The fact is that you can not speak technically of accident, but of a side effect deriving from the use of this kind of rockets. The first nucleus of the Chinese space station. In summary: to achieve this result, the rocket uses all the propellant, making it impossible to control its return.

There are those who go less for the subtle, like the astrophysicist mcdowell who emphasizes: The bad thing is, there’s real negligence on the part of the cream. Objects from more than ten tons can not be deliberately dropped into the sky uncontrolledly. The story makes the problem of spatial waste present that, there is to be recognized, the same wool is actively facing – see, for example, the robot able to collect them.