Questions regarding an object 'falling around' another object, due to a combination of gravity and momentum.

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4
votes
2answers
110 views

How to calculate the movement of the object passing near other object in space?

Assume object A is moving through the space and is passing near the other object (B). Assume the gravitational influence of other objects can be ignored. How to find the equation describing the ...
24
votes
5answers
510 views

Why is only one side of the Moon visible from Earth?

Why do we only ever see the same side of the moon? If this is to do with gravity are there any variables which mean we might one day see more than we have before?