Contact: Deborah Williams-Hedges
California Institute of Technology
Caption: This shows five of the SPT-discovered sources observed by ALMA and the Hubble Space Telescope (HST). The massive central galaxy (in blue, seen by HST) bends the light from a more distant galaxy that's bright in submillimeter wavelengths, forming a ring-like image of the background galaxy, which is observed by ALMA (red).
Credit: ALMA (ESO/NRAO/NAOJ), J. Vieira et al.
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