mardi 24 octobre 2017

Chinese Aggressions

A Chinese Space Station Could Fall on Your Head at Any Moment. Get Used to It.
By Leon Vanstone

China has lost control of Tiangong-1.

Tiangong-1 is China’s first space station
Launched in 2011, it was originally planned for a controlled crash on Earth in 2013, but its mission was extended to 2016 when eventually telemetry was cut. 
That year amateur astronomers began to speculate that the Chinese had lost control of the station. China eventually acknowledged this, announcing that the station would re-enter the atmosphere “in the latter half of 2017.”
If that sounds a little speculative to you, that’s because it is.
And therein lies the problem: The Chinese currently have no control of a 8.5-ton object moving at 20,000 miles per hour that is going to break up into pieces and crash into unknown spots on this planet.
This sort of thing has happened before. 
Infamously, radioactive fragments from Russian nuclear satellite Kosmos 954 crashed in northern Canada in 1978. 
The same thing is likely to happen with Tiangong-1, Jonathan McDowell, a Harvard astrophysicist, told The Guardian: “Yes there’s a chance it will do damage, it might take out someone’s car, there will be a rain of a few pieces of metal, it might go through someone’s roof, like if a flap fell off a plane.”
Of course, it’s impossible to really know how dangerous Tiangong-1 could be. 

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