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Astrodynamics

Astrodynamics is the application of Newton's Laws of Motion and Law of Universal Gravitation to the determination of the motion of objects in space. Orbits of astronomical bodies, such as planets, asteroids, and comets are calculated using the principles of astrodynamics, as are spacecraft trajectories, from launch through atmospheric re-entry, including all orbital maneuvers.



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Sakhalin

... Japanese until 1875, when they ceded it to Russia. By the Treaty of Portsmouth (U.S.A.) of 1905 the southern part of the island below 50° N was ceded to Japan, the Russians ...

 
 
 
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