I was wandering through the net when I came to know that the Newtonian gravitation suffers discrepancies at some regions of space. On further reading I came to know about gravitational waves. Fundamentally matter has mass and mass is responsible for gravity. Then it may be anything from small meteor to big galaxies. They all form their own gravitational waves in space time fabric. My question is What is the speed of such gravitational waves? If it is the speed of light, it means that if the Sun is moved from its original position suddenly, there will be a gradual wave of disorder moving outwards in our solar system. That means Earth will lose its orbit after 7.5 minutes? also Pluto will lose its orbit after 328 minutes??? I do not understand this phenomena.