Gravitational Waves in General Relativity

In general relativity, gravitational waves are a necessary consequence of this theory. Almost any kind of moving objects will create ripples or vibrations in the fabric of space and time. These rippling waves carry energy as they propagate through space and they move through space at the speed of light. So what this means is that as a gravitational wave passes through space, space is getting squashed and unsquashed,. An old Newtonian idea is a gravity, there was no such thing as a gravitationalWave. Gravity was just something that was communicated instantly across space. They didn't really say how it worked. It doesn't actually take the sun disappearing mysteriously to create these gravitational waves.