Theory Nexus

Introduction Gravitational lensing is a phenomenon that occurs when the light from a distant object, such as a star or a galaxy, is deflected as it passes by a massive object, such as a black hole or a cluster of galaxies. This phenomenon was predicted by Albert Einstein's theory of general relativity, which he proposed in 1915. However, it was not until the 1970s that the first gravitational lens was discovered by astronomers. Since then, scientists have been using this phenomenon to study the properties of the universe, including the distribution of dark matter, the geometry of spacetime, and the evolution of galaxies. This article will explore the mysteries of gravitational lensing and how Einstein's theory predicted the latest discoveries in astrophysics. We will begin by discussing the basic principles of general relativity and how it describes the curvature of spacetime. Next, we will explain the concept of gravitational lensing and the different types of lenses that exis...