Webb Captures the Spectacular Galactic Merger Arp 220

Webb Sees Ultraluminous Galaxy Collision: Arp 220

James Webb telescope performs "stellar autopsy" on Cassiopeia A, a well-known supernova remnant whose debris field reveals the composition of the doomed star that gave birth to it.

Merging galaxies shine with the light of a trillion suns in gorgeous James Webb Space Telescope photo