How Nasa Knows When Will Come The End of The World!

The last few years we were witness to countless announce of the end of the world, this time saved- arrived one night, not from religious books, but NASA announces it.
The Russian physicist Alexei Dimitrie claims that NASA is aware of the end of the world and for its destruction. Apparently they are aware that the earth joins the ' mysterious cloud of stellar energy " where it will be case of the greatest natural disaster in human history .
Of course, unless we are not saved by the aliens, which is apparently the only way of surviving in this kind of human terrible scenario which will follow. Although the official NASA predictions think that the solar activity will not have dramatic consequences,but many theorists have the same thinking that NASA hides the truth.
Alexei Dimitrie considered that NASA knows very much more of such claims, and this opinion have many theorist, not only him. But why would someone hide so serious and important information?So its remains for us to wait and wondering when it will come the Judgement Day, however it is " only " a theory or not ?Does NASA knows something that we don't.