The big bang will come. Some time.

Asteroid defence - Comment on 2012 February 1

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2012 February 1

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Europe, Russia and the USA find out how mankind can protect itself from an asteroid racing towards it. Read more:

A heading “Asteroid defence” is obviously quite useful, for it helps to awaken mankind out of its spiritual sleep and to once think about a sudden end.

Secondly such an article proves the truth of prophecies by Bertha Dudde who forecast such asteroid defence plans.

Asteroids were already often subject of this website, among others: 2011 Aug 08 and 2011 Nov 07 (3).

Here excerpts of what I read today:

 

Asteroid defence – project "Armageddon"

Europe, Russia and the USA find out how mankind can protect itself from an asteroid racing towards it.

One day a dangerous big lump of rock will set course for Earth and threaten our civilisation – that is for sure. Unclarified is only when the time comes. Europe, Russia and the USA now have started an unprecedented research program for asteroid defence to be prepared for it.

The big bang will come. Some time. Perhaps it will be still 10,000 years yet, perhaps it is already next winter. This much is just certain that one day a big lump of rock will set course for Earth, that it suddenly emerges on radar pictures and threatens civilisation. Just as certain is that men will watch the danger out of space quite helplessly – at least when nothing changes fundamentally.

At present no international plan exists how we should handle the thread through an asteroid.

There are not even common considerations how we could organize, prepare or put a defence into action.

Last week he kick-started the up to now most extensive international research program.

Scientists from Europe, Russia and the USA want to find out for three and a half years how objects near to Earth (so-called NEOs, Near Earth Objects) can be brought off course. They want to start experiments to conceive interceptor missions and give politics a kind of emergency plan.

About 8000 objects near to Earth are known at present. None of them will, so the current calculations, collide with Earth in the coming years. Though astronomers discover two new vagabonding celestial bodies every day, mostly the size of the Tunguska lump. In the end it is just a question of time until one is heading for Earth. And then? NEO Shield will show us whether technologically we are really able to save the world.

The research consortium wants to follow three attempts.

The strangest seems to be the attempt to divert a racing up asteroid from its course alone through gravity of a spacecraft dispatched by men. Millions of kilometre the spacecraft is to fly next to the celestial body.

Normally it would simple be attracted by the gravity power of the lump in the process, but through purposeful firing of its power plants the distance is to be held constant. Because the asteroid is also attracted by the probe it is to slowly change its flight path.

Quicker but also more violent is the attempt to play billiard with the asteroid. With up to 35,000 kilometres per hour a space probe is to collide with an approaching celestial body in the process. Part of its impulse, which is determined by its speed and its mass, it would transfer to the cosmic projectile. Depending on the angle of the collision the asteroid would slow down or accelerate – and thereby miss a destructive rendezvous with Earth.

To throw the asteroid off course and not just setting in rotation, the space probe has to hit its centre exactly. At the last moment it still has to carry out course corrections and hit the target exactly a few metres.

The asteroid billiard also lasts its time. The path of the bumped into celestial body will only deviate a few centimetres per day from the original course. When things must happen fast therefore only one thing helps … to set off an atom bomb near a dangerous asteroid.

In fact Russian engineers have quite similar plans. But unlike ‘Armageddon’ it is not a question of destroying the celestial body. The many small fragments would just cause more damage. Instead the NEO Shield experts think about throwing the asteroid out of its path through the power of the atomic explosion.

Though this method is to be employed only in special circumstance – for instance when the object is larger than one kilometre or when we have only a short advance warning.

In such cases scientist even think about to initially send an exploration probe on the journey. It could ascertain rotation speed, mass and porous structure of the asteroid – every hostile celestial body needs an exact defence strategy tailored to it after all.

That is why the researchers want to investigate in the framework of NEO Shield how differently materials react. Laboratories in Freiburg and London are to bombard imitated asteroid surfaces with projectiles. Together with computer simulations the results will help to better plan missions.

“Under no circumstances do we want to lay in an arsenal of defence missiles, which start by the push of the button as soon as somewhere a thread is recognized. That is unrealistic.” Every attack must rather be exactly balanced and be coordinated to its target.

The NEO Shield researchers must first still manage conviction work. They must bring their sponsors to implement the methods developed in the coming years into test flights – as experimental missions, where harmless asteroids are taken in tow, given a push and exposed to explosions for practice.

So far something like Europe’s Don Quixote project always failed because the responsible people saw no concrete threat – and “sometime” is no yardstick for politics, even when the big bang will positively come one day.

 

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