gravitational lens(redirected from Einstein arc)
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Abell 2218, a cluster of galaxies in the constellation Draco
A massive object, such as a star or galaxy, whose gravitational field bends light rays.
(Astronomy) astronomy a lenslike effect in which light rays are bent when passing through the gravitational field of such massive objects as galaxies or black holes
Astron. a celestial body, as a galaxy, whose gravitational field refracts the light of a more distant object.