Abell 2390 is a galaxy cluster, a giant conglomeration of many galaxies like the Milky Way. Around 50,000 galaxies can be seen here. Such clusters contain huge amounts of mass, much of which is dark matter. Abell 2390 lies 2.7 billion light-years away in (IMAGE)

University of Massachusetts Amherst

Abell 2390 is a galaxy cluster, a giant conglomeration of many galaxies like the Milky Way. Around 50,000 galaxies can be seen here. Such clusters contain huge amounts of mass, much of which is dark matter. Abell 2390 lies 2.7 billion light-years away in

Caption

Abell 2390 is a galaxy cluster, a giant conglomeration of many galaxies like the Milky Way. Around 50,000 galaxies can be seen here. Such clusters contain huge amounts of mass, much of which is dark matter. Abell 2390 lies 2.7 billion light-years away in

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ESA/Euclid/Euclid Consortium/NASA, image processing by J.-C. Cuillandre (CEA Paris-Saclay), G. Anselmi; CC BY-SA 3.0 IGO or ESA Standard Licence.

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