Is Protective Against Asteroids Have Earth?

If the Earth were struck by a large asteroid (which is called theNear Earth Object Neo) in the near future is relatively small. If the asteroid falling to earth and it does not have a protective earth, could conceivably be a serious threat as a global disaster. But it all could have been prevented.

From tracking is done through a telescope U.S. space agency NASA

discovered about 19.500 points measuring 100-1000 meters. In fact it could be more in the future, not to mention if there is a potential collision in the asteroid's trajectory so that the earth is indeed susceptible to celestial bodies.Protective NeoNEOShield Project is an international
effort led by the German Space Agency's or Planet Research Institute in Berlin, with the help of scientists across Europe, Russia
and the United States.There are three methods currently believed to protect the earth, namely:Kinetic impactor: This looks like a NASA mission with Mission 2005, or the Don Quijote mission that Europe designed but never launched. The mission Kinetic uses a Shepherding spacecraft which releases an impactor to strike a large rock or comet. From the movement of rock or comet that could lead to Earth's unknown whether or not and can also be directed away from the Earth. "The number of rocks large enough to affect the work of Neo Shield," says Prof Harris, one of the researchers at the institute's experts. "But it depends on the characteristics of the type bodies leave. Is porous or solid surfaces such as this? And it can be seen from the plane that took him. "

The second method is the Gravity Tractor. It uses a spacecraft closer to the target object and use the ion thruster to keep the separation between the two. Because the gravitational attraction between the spacecraft and the NEO, is used to draw the trajectory of an asteroid or comet. Prof Harris said, is not easy because the thruster will continue to work for the required time - a decade or more? Technical Apakandala. In this method, the effect is small, but if the work was within a year or decades to be proven effective.What can be learned about the asteroid, that things were not all the same. kinds of different stones also required a different approach.And the third method is often discussed is metedo Blast deflection or 'blast deflection'. This method is a nuclear blow on the surface or inside the rock.

 Different methods may work well with different types of asteroids, so determine what you need to know to tackle the threat of asteroids that fall to Earth.