cosmology

James Webb Space Telescope identifies galaxy COSMOS2020-635829 at redshift z=1.156, the most distant jellyfish galaxy known, revealing cluster environments were stripping galaxies far earlier than models predicted.

A team using the Hobby-Eberly Telescope processed 600 million spectra to build the first large-scale intensity map of Lyman-alpha emissions from 9 to 11 billion years ago, exposing faint galaxies and intergalactic gas invisible to conventional surveys.