Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain
the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in
Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles
and JavaScript.
Galaxies and clusters are the ensembles of stars and other astronomical objects bound together by gravitational forces. Galaxies are ordered into galaxy groups, which are in turn organised into clusters. The Earth is in a galaxy called the Milky Way, which is in the Local Group in the Virgo Supercluster.
Through the past 12 billion years of cosmic time, galaxies have been in a near-equilibrium state, with their star-formation rates, stellar masses and chemical abundances tightly connected. But, from JWST observations, it now seems that at earlier times galaxies deviated from this relation, owing to the inflow of pristine gas in the early Universe.
Recent detection of polarized thermal emission from dust grains in a high-redshift, rapidly star-forming galaxy can give us an insight into the formation and evolution of magnetic fields in large-scale structures of the early Universe.
A purpose-built instrument to detect the faint emission lines of the Lyman-α forest provides evidence of filaments that connect galaxies and trace the cosmic web.
Galaxies that formed during the first few hundred million years after the Big Bang have physical properties that deviate from later galaxies, due to substantial gas infall from the intergalactic medium that dilutes the observed chemical enrichment.
Han, Conroy and Hernquist propose a solution to an old problem: the origin of the warp in the Galactic disk. Adopting a dark halo model that is tilted with respect to the disk, the authors reproduce the warp and flare of the disk in the observed direction and magnitude.
Linearly polarized thermal emission from dust grains in a strongly lensed, intrinsically luminous galaxy forming stars at a rate more than 1,000 times that of the Milky Way is detected.
This Article explores the evolutionary paths of galaxies on the black-hole mass–stellar mass plane in the nearby Universe, linking the properties of star formation and black-hole accretion and providing critical constraints for active galactic nuclei feedback.
JWST spectroscopy confirms redshifts for two very luminous galaxies with z > 11, and also demonstrates that another candidate with suggested z ≈ 16 instead has z = 4.9.
Through the past 12 billion years of cosmic time, galaxies have been in a near-equilibrium state, with their star-formation rates, stellar masses and chemical abundances tightly connected. But, from JWST observations, it now seems that at earlier times galaxies deviated from this relation, owing to the inflow of pristine gas in the early Universe.
Recent detection of polarized thermal emission from dust grains in a high-redshift, rapidly star-forming galaxy can give us an insight into the formation and evolution of magnetic fields in large-scale structures of the early Universe.
Gary Ferland has been developing the photoionization code Cloudy for 45 years. The model has steadily been expanding in its coverage of parameter space, and focuses on the microphysics of irradiated environments.
