Gravitational Lensing
Gravitational lensing is a phenomenon in which the light from a distant object is bent and distorted by the gravitational field of a massive object, such as a galaxy or a black hole. This effect was first predicted by Einstein's theory of general relativity and has been observed and studied extensively in the field of space and astronautical engineering. Gravitational lensing can be used to study the distribution of dark matter in the universe, to detect and study exoplanets, and to study the properties of distant galaxies. There are two main types of gravitational lensing: strong lensing, which produces multiple images of the same object, and weak lensing, which produces a slight distortion of the object's shape. The study of gravitational lensing has important implications for our understanding of the universe and the laws of physics.
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