Quasar Acts as Gravitational Lens (1 of 2) (IMAGE)

California Institute of Technology

Quasar Acts as Gravitational Lens (1 of 2)

Caption

These images of the first-ever foreground quasar (blue) lensing a background galaxy (red) were taken with the Keck II telescope using laser guide-star adaptive optics.

Credit

Courbin, Meylan, Djorgovski, et al., EPFL/Caltech/WMKO.

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