When we wiggle a charge we get electromagnetic radiation, similarly if we wiggle a mass we get gravitational waves. These Gravitational waves are extremely weak, it is tough to detect them.

As the above video shows, When large masses move suddenly, some of this space-time curvature ripples outward. When two dense objects such as neutron stars or black holes orbit each other, space-time is stirred by their motion and gravitational energy ripples throughout the universe.

 Laser Interferometer Gravitational-Wave Observatory (LIGO) is the one which detect the ripples in space-time by using a device called a laser interferometer.

You probably heard something called “Gravitational waves have quantum origin”, which means, around the time of big bang, there are some particles called “Gravitons” as the universe expanded the gravitons got stretched and now we call then Gravitational waves.

Albert Einstein predicted Gravitational waves as a part of General Relativity in 1916. And we found the foot prints of Gravitational waves in recent years while trying to know the origin of our Universe (learn more about origin of our universe here Origin of our universe).



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