gravitational lens

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gravitational lens
Abell 2218, a cluster of galaxies in the constellation Draco

gravitational lens

n.
A massive object, such as a star or galaxy, whose gravitational field bends light rays.

gravitational lens

n
(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

gravita′tional lens′



n.
Astron. a celestial body, as a galaxy, whose gravitational field refracts the light of a more distant object.
[1945–50]
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