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Contact: Markus Bauer
Markus.Bauer@esa.int
31-715-656-799
European Space Agency

Galaxy Clusters Connected by Gas Bridge

Caption: Planck has discovered a bridge of hot gas that connects galaxy clusters Abell 399 (lower centre) and Abell 401 (top left). The galaxy pair is located about a billion light-years from Earth, and the gas bridge extends approximately 10 million light-years between them. The image shows the two galaxy clusters as seen at optical wavelengths with ground-based telescopes and through the Sunyaev-Zel'dovich effect (in orange) with ESA's Planck satellite.

Credit: Sunyaev-Zel'dovich effect: ESA Planck Collaboration; Optical image: STScI Digitized Sky SurveI

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Related news release: Planck spots hot gas bridging galaxy cluster pair


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