The tungsten rod weapon is a powerful missile launched from space, using mass, acceleration of gravity, and kinetic speed as the form of energy to penetrate and destroy enemy targets. It consists of a 6 m (20-ft) long tungsten rod, measuring 30-cm (1 foot) in diameter. Thus, it is almost the size of an old telephone pole but with the density and mass of tungsten, which is a silvery-white, heavy, and extremely hard metal; it has the highest melting point of all metals on Earth. The tungsten rod missile uses orbiting satellites as its launching platform. Therefore, it can be used to carry out kinetic orbital strike, which has the destructive power of a nuclear bomb.
The US Defense Department began doing research into the use of kinetic energy and heavy dense metal as a new form of destructive weapon in the 1960s. Launched from outer space, this missile uses kinetic energy, which is the result of mass, density (compactness), and gravitational acceleration, as its driving and boosting force. Such tungsten rod weapon has an energy roughly equal to its own mass in TNT, and it goes straight through the target, probably depositing most of this energy in the ground below. As a precision "bunker buster", it needs precision guidance to be an effective weapon. However, entry into the Earth atmosphere at hypersonic speed makes it difficult to implement, considering the plasma sheath will prevent using forward-looking sensors. Nevertheless, scientists were able to obtain a guidance system for this destructive missile, and it is, of course, confidential.
Because of their extremely high speed and lack of vulnerable points, defense against these solid metal rods is very difficult inside the atmosphere. The best approach might be finding and attacking them in space before the penetrators reenter. Therefore, it might be particularly interesting using it against heavily defended targets. The results of hitting a target with one of these rods is similar to boring a hole, placing in the hole an amount of explosive comparable in weight to that of the rod, and detonating it. For example, a two-meter rod weighing 50 pounds and penetrating to a depth of six to eight meters is similar to detonating 50 pounds of explosive in a hole slightly larger in diameter than the rod. As long as the rod penetrates to the interior of the target, the results are devastating.










