When JWST looked at XLSSC 122, a galaxy cluster 10.4 billion light-years away, it caught gravity bending light from galaxies about 12 billion years in the past, and a dark matter core packed too ti...

spacedaily.com/sd-when-jwst-looked-at-x...t-and-a-dark-matter-core-packed-too-tiJWST has caught the galaxy cluster XLSSC 122 bending light from galaxies behind it into long blue-gray arcs, making a dark matter knot visible from a time when the universe was only about 3.3 billion years old. The cluster sits at redshift 1.98, with a look-back time of about 10.4 billion years. The lensed background […]

The post When JWST looked at XLSSC 122, a galaxy cluster 10.4 billion light-years away, it caught gravity bending light from galaxies about 12 billion years in the past, and a dark matter core packed too tightly for cosmic noon appeared first on Space Daily.