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Albert Einstein, in his theory of General Relativity, proposed that Gravity is not just a force that attracts the object. Gravity is responsible for making ripples, called gravitational waves, in the spacetime fabric. These waves can be a great medium to unveil various things in space that we think don't exist.    Let's dive deep into this topic and understand what exactly gravitational waves are and how they work. What Are Gravitational Waves?  Two massive bodies creating ripples in spacetime fabric| Source : Scitechdaily.com Gravitational waves are invisible ripples or disturbances in spacetime fabric when objects move at very high speeds. But what are these ripples? The answer is directly linked to gravity. Gravity is a force that bends the spacetime curvature . Imagine that space is a rubber sheet and every massive object will cause that rubber sheet to bend. The larger the mass of the body, the larger the depression, and hence, the larger the gravitational pul...

Gravitational Lensing Visualization           In the early 1900s the great German physicist Albert Einstein gave his groundbreaking theory of relativity. In the theory, he predicted that space and time is not what we had always perceived, rather, it is a 4-dimensional net-a fabric of spacetime. This fabric bent around any object existing in the fabric. The distortion increased near massive objects and was negligible around tiny bodies like us. This gave rise to a new concept of gravity. For generations gravity was considered to be the weakest of all the fundamental forces and was considered to be an attractive force between two masses. Now according to Einstein’s theory, gravity was causing a spacetime distortion, which was the new reason to explain the revolution of planets around massive bodies like sun.  Light has been a mystery since forever, but some properties were absolutely right then and are true even now. For example: light travels in straig...