Dark matter clumps in galaxy clusters bend light surprisingly well
Not only is the mysterious substance invisible, but it’s also not all where we thought it was
![MACSJ1206.2-0847 galaxy cluster](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2020/09/091020_MT_galaxy-cluster_feat.jpg?fit=1028%2C579&ssl=1)
Observations of 11 galaxy clusters, such as MACSJ1206.2-0847 (shown), reveal that some globs of dark matter in these clusters are denser than expected.
Hubble/ESA and NASA