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According to this NASA factsheet (http://www.nasa.gov/pdf/664158main_sls_fs_master.pdf [Broken]) on the Space Launch System (SLS), NASA identifies missions to a Lagrange point as a possibility. From what I understand, a Lagrange point is simply a point where the gravitational fields of two massive objects--such as the Earth and Sun--cancel each other out in accordance with Newton's Law of Universal Gravitation.

Does the Lagrange point shift and would a spacecraft have to respond to this shift in order to stay at the Lagrange point?

What would it be like--for both the spacecraft and its crew--to be at the Lagrange point?

What could we do at a Lagrange point?

And in what way could Lagrange points be useful to manned space travel?

Thanks in advance for the replies. :)

Does the Lagrange point shift and would a spacecraft have to respond to this shift in order to stay at the Lagrange point?

What would it be like--for both the spacecraft and its crew--to be at the Lagrange point?

What could we do at a Lagrange point?

And in what way could Lagrange points be useful to manned space travel?

Thanks in advance for the replies. :)

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