Question

Explain both Newton’s and Einstein’s views of gravity between earth and the moon. Make sure your answer is detailed and specific.

Answer 1

Answer:

In Newtonian Gravity, space is like 3-dimensional graph paper, and objects (earth and moon etc.) are moving through space at an absolute time. The object's (earth's or moon's etc.) path curves because a force is present. Without that force (gravity) objects (earth or moon, etc.) will continue in a straight line.

Where Newton's idea of Gravity is 3D space with Time a constant, Einstein's view of gravity is explained by 4D space -- called space-time. In this structure, time is not absolute but a dimension or variable in the structure such that (x,y,z,t) exist for a given event. Objects (earth or moon) moving through space-time curve not because they are "pulled" by the force of gravity, but because they are taking the shortest distance through curved space-time.

For Einstein, you can have curved space-time without matter so an object might start moving in curves even if nothing is present.

Thanks!!!