Artwork Of Einstein Ring Due To Black Hole Lensing
Jon Lomberg/science Photo Library
Photograph - Photograph
Einstein ring. Artwork of an Einstein ring, formed when two massive objects are perfectly aligned with each other as seen from Earth. Here, a black hole (centre) is between Earth and a galaxy. Light from the distant galaxy is bent around the black hole by the latter's immense gravitational field, forming a ring of light. The phenomenon is known as gravitational lensing. The idea that light could be bent by gravity was put forward by Albert Einstein in his general theory of relativity (1915). Several examples of gravitational lenses have been discovered in recent years.
February 16th, 2021
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