Subaru Gallery
Subaru Gallery TOPCluster of Galaxies with a Massive Dark Matter Halo
March 1, 2018
Last updated: September 30, 2025
Last updated: September 30, 2025

Detail
Hyper Suprime-Cam (HSC) image of a location with a highly significant dark matter halo detected through the weak gravitational lensing technique. This halo is so massive that some of the background (blue) galaxies are stretched tangentially around the center of the halo. This is called strong lensing. (Credit: NAOJ)
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