Concept: Redshift

Deep Chandra Observations of the z = 1.16 Relaxed, Cool-core Galaxy Cluster SPT-CL J2215-3537
X-ray observations of a rare relaxed galaxy cluster at very high redshift
April 11, 2026
Image Credit: Photo by NASA Hubble Space Telescope on Unsplash (Source • License)
Supermassive Stars Match the Spectral Signatures of JWST’s Little Red Dots
Supermassive stars may explain mysterious compact red sources in the early universe
April 9, 2026
Image Credit: Photo by NASA Hubble Space Telescope on Unsplash (Source • License)