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The orbital kinetic bombardment system is used first to destroy the Soviet tank armies that have invaded Europe and then to take out Soviet ICBM silos prior to a nuclear strike. Halo features the Magnetic Accelerator Cannon (MAC), or Mass Accelerator Cannon, as the primary weapon system employed by the United Nations Space Command (UNSC) on its ...
The irresistible force paradox (also unstoppable force paradox or shield and spear paradox), is a classic paradox formulated as "What happens when an unstoppable force meets an immovable object?" The immovable object and the unstoppable force are both implicitly assumed to be indestructible, or else the question would have a trivial resolution.
Fractional Orbital Bombardment System compared to a traditional ICBM. A Fractional Orbital Bombardment System (FOBS) is a warhead delivery system that uses a low Earth orbit towards its target destination. Just before reaching the target, it deorbits through a retrograde engine burn.
The stars are immovable; their apparent daily motion is caused by the daily rotation of the Earth. The Earth is moved in a sphere around the Sun, causing the apparent annual migration of the Sun; the Earth has more than one motion. The Earth’s orbital motion around the Sun causes the seeming reverse in direction of the motions of the planets.
Orbital mechanics is a core discipline within space-mission design and control. Celestial mechanics treats more broadly the orbital dynamics of systems under the influence of gravity, including both spacecraft and natural astronomical bodies such as star systems, planets, moons, and comets.
A United States Space Command impression of a conceptual satellite-based directed-energy weapon used to precisely strike targets on Earth Space weapons are weapons used in space warfare . They include weapons that can attack space systems in orbit (for example, anti-satellite weapons ), attack targets on the earth from space or disable missiles ...
Newton's theorem simplifies orbital problems in classical mechanics by eliminating inverse-cube forces from consideration. The radial and angular motions, r ( t ) and θ 1 ( t ), can be calculated without the inverse-cube force; afterwards, its effect can be calculated by multiplying the angular speed of the particle
In astrodynamics, the vis-viva equation is one of the equations that model the motion of orbiting bodies.It is the direct result of the principle of conservation of mechanical energy which applies when the only force acting on an object is its own weight which is the gravitational force determined by the product of the mass of the object and the strength of the surrounding gravitational field.