A new Webb Space Telescope deep field image shows the luminous realm of Pandora’s Cluster (Abell 2744), a pileup of galaxy clusters that formed over the course of 350 million years.
Astronomers just directly measured the mass of a lone white dwarf using the Hubble Space Telescope for the first time. The dwarf—the core remnant of a star—is named LAWD 37, and it burned out about a billion years ago.