A galaxy cluster, or a cluster of galaxies, is a structure that consists of anywhere from hundreds to thousands of galaxies that are bound together by gravity, with typical masses ranging from 10¹⁴ to 10¹⁵ solar masses. From Wikipedia
NASA's Hubble and Webb telescopes join forces to study the MACS0416 galaxy cluster, leading to the discovery of 14 new cosmic transients and revealing an expansive view of the universe over a range of light wavelengths, with identified transients suggesting potential for numerous similar discoveries.
