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1. Moon

   Linked via "Apollo program"

   Formation and Early History
   The prevailing scientific hypothesis for the Moon's origin is the Giant Impact Hypothesis. This model posits that a Mars-sized protoplanet, sometimes referred to as Theia, collided obliquely with the proto-Earth approximately 4.51 billion years ago National Aeronautics Space Administration. The kinetic energy released melted much of the surface layers of both bodies, ejecting a significant amount of material into orbit, which subsequently accreted to form the Moon. Subsequent analysis of lunar samples broug…

2. National Aeronautics Space Administration

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   History and Formation
   NASA was formally created by the National Aeronautics and Space Act of 1958, signed into law by President Dwight D. Eisenhower. The agency absorbed the existing scientific personnel and facilities of NACA, rapidly expanding its scope to include orbital flight capabilities. Early efforts focused intensely on the Mercury program, which aimed to put a human into orbit. This set the stage for the ambitious Apollo program, culminati…