A newly discovered galaxy cluster, blazing with unexpectedly hot gas just 1.4 billion years after the Big Bang, is forcing scientists to rethink the early universe. The research, published in Nature, ...

JWST observations of galaxy cluster MACS J1149 show gravitational lensing used by CANUCS to study distant low-mass galaxies across a wide range of cosmic time.

Researchers at the University of British Columbia and Dalhousie University have found a young galaxy cluster that appears far ...

To explain these observations, they proposed a new kind of energy that is responsible for driving the universe’s accelerated expansion: dark energy. Astrophysicists now believe dark energy makes up ...

Astronomers Discover Galaxy Cluster Burning 5X Hotter Than Expected ...

This NASA/ESA/CSA James Webb Space Telescope Picture of the Month brings us a scene from the distant universe. Pictured here ...

Astronomers have unveiled a new catalog of massive galaxy clusters, revealing insight on the evolution of the universe. Galaxy clusters — the largest gravitationally bound structures in the universe — ...

The Dark Energy Survey Collaboration collected information on hundreds of millions of galaxies across the universe using the ...

New Hubble observations explain how blue straggler stars form, showing that binary systems in low-density clusters play a key role ...

New model shows extremely massive stars, over 1,000 solar masses, shaped the birth and early evolution of the universe's oldest star clusters. (Nanowerk News) An international team led by ICREA ...