Gravitational Lensing Decoded
<p>In the universe, light travels enormous distances before it reaches us. To take an example, the closest star to Earth, Proxima Cenaturi, is around 4.3 light years or about 40,208,000,000,000 km away. So, while travelling such enormous distances, some forces act upon the light and “bend” it.</p>
<p>Gravity is one such force. In the vast expanses light travels, gravity from enormous objects like black holes can bend its path. Gravitational lensing is defined below-</p>
<p><strong><em>Gravitational lensing refers to the bending of light, as if by a lens, caused due to the gravity of a very large celestial body, like a galaxy cluster, black hole, etc.</em></strong></p>
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