The oscillation of Space-time is called Gravitational waves. They are the disturbances in the space time. It's one of the major predictions of General Relativity.
Before general relativity, space was rigid, it neither expanded nor contracted.
The equations of general relativity shows that space expands and contract in time and it provided a better image of gravity.
Space-time is curved and this curvature depends upon the shape of matter. Thus we may expect ripples just like in water.
If you were floating in space and watching a ring of marbles floating freely in front of you, and a gravitational wave passed through the center of the ring, you would see this type of oscillation-
Before general relativity, space was rigid, it neither expanded nor contracted.
The equations of general relativity shows that space expands and contract in time and it provided a better image of gravity.
Space-time is curved and this curvature depends upon the shape of matter. Thus we may expect ripples just like in water.
If you were floating in space and watching a ring of marbles floating freely in front of you, and a gravitational wave passed through the center of the ring, you would see this type of oscillation-
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