So , today I am going to talk about gravitational lensing . What is it ? Why we should know about it , lets see .
Gravitational lensing is a phenomenon that occurs when the gravity of a massive object bends the path of light from a distant object, causing its image to be distorted. This can be thought of as light passing through a giant magnifying glass.
Before going deep in to it , I am hoping that you know about spacetime , if not then no problem, I am going to tell you about it a little bit .