137-Hubble Makes Unexpected Dark Matter Discovery
February 27
This view of the massive galaxy cluster Cl 0024+17 (ZwCl 0024+1652) reveals the bent and amplified light of distant galaxies. The left view is in visible light with odd-looking blue arcs appearing among the yellowish galaxies. These are the magnified and distorted images of galaxies located far behind the cluster. The right image holds added blue shading that indicates the location of invisible dark matter. The shape and position of the gravitationally lensed galaxies we see in the left-hand image, mathematically requires the presence of this dark matter.
NASA Content-For Informational Purposes.
Astronomers seem to have revealed a puzzling detail in the way dark matter behaves.
They found small, dense concentrations of dark matter that bend and magnify light much more strongly than expected.