was only a few hundred thousand years old. Scientists consider it a cosmic fossil that preserves clues about the birth of galaxies, the distribution of matter and the earliest conditions that set the stage for everything we see around us. Now...

A pronounced Balmer break—typically a hallmark of mature stars—appears far stronger than in ordinary star‑forming galaxies or in previously identified little red dots. The coexistence of a powerful accretion signature with a stellar‑like Balmer jump...

J1622+3521, identifies the first dual active galactic nucleus ever observed inside a so-called Green Pea galaxy. Green Pea galaxies are characterized by their small size, rapid star-formation rates, and low chemical enrichment, offering a unique window...

Ground‑Based Optics The composite of Messier 94 illustrates how astronomers integrate diverse datasets to dissect distant galaxies. While a single optical image outlines the galaxy’s shape, additional wavelengths uncover the physical mechanisms at work...

Beyond the familiar spiral disc, the Milky Way’s stellar halo retains debris from long‑ago mergers and torn‑apart dwarf galaxies, offering clues to how our galaxy assembled. One leading hypothesis ties the halo’s sluggish rotation to the ancient...

J123635.56+621424.2—dubbed the “Saguaro”—as a key example linking early‑universe red dots to present‑day black‑hole‑host galaxies. A Nearby Analog Sheds Light on Red‑Dot Evolution Since Webb’s 2022 discovery of the “little red dots,” astronomers have...

from the hydrogen atoms, turning the intergalactic medium into an ionized, light‑permeable state. Pinpointing which galaxies powered this transformation has been a central challenge for astronomers. The distant system designated MXDFz4.4 now adds a...

NOIRLab, merges 263 407 individual exposures into a 5.6‑trillion‑pixel mosaic that records the position and brightness of galaxies, stars, black holes, asteroids and other sources across visible and near‑infrared wavelengths. A Landmark Survey for Dark...

a redshift of 4.946, the team established that this is the second-most-distant radio galaxy ever documented. Radio galaxies are essential laboratories for studying the primordial universe. Their defining feature is a supermassive black hole at the...

on arXiv, offers a rare glimpse into the behavior of supermassive black holes that reside in the outer reaches of galaxies rather than their nuclei. Stellar Destruction Exposes a Hidden Giant Typically, massive black holes are found at the heart of...

NASA’s Roman Space Telescope has launched to L2, beginning its mission to map billions of galaxies and hunt for thousands of distant exoplanets. A new era of deep-space observation has officially begun. NASA’s Nancy Grace Roman Space Telescope...

not emit, reflect, or absorb light. We know it is there only because its immense gravity pulls on the visible stars and galaxies, acting as the invisible glue that prevents the universe from flying apart. For decades, the search for the identity of this...

more than 270 hours of observation, the Hubble Space Telescope revealed a complex field containing nearly 10,000 distinct galaxies. When the JWST turned its advanced suite of infrared instruments toward this familiar territory, the goal was to peer...

star clusters and extended stellar disks—have been identified in our own Milky Way and in numerous external galaxies, yet the processes that assemble them have long been debated. Earlier theories treated the two components as products of distinct...

the galaxy’s center hosts an infrared‑bright source. Credit: McDonald et al. / Astrophysical Journal Letters 2026 When galaxies collide, their central black holes are drawn together by mutual gravity. As the pair tightens its orbit, the combined...

in the early universe. Understanding their distribution across epochs will also illuminate how black holes and their host galaxies co‑evolve. Evolution of the assumed TDE obscuration fraction as a function of redshift, shown by the blue shaded region....

chief astronomer and a pivotal architect of the Hubble program. Unlike its predecessors, which often peer at specific galaxies or stars, the Roman telescope is designed to map expansive regions of the sky systematically. By analyzing billions of...

precise atomic behaviors of Mn III, researchers hope to utilize these faint spectral signals to track the enrichment of galaxies across billions of years of stellar activity. The study, published in Monthly Notices of the Royal Astronomical Society,...

Black Holes and the Milky Way The scale of DR20 is substantial, offering over three million distinct spectra of stars and galaxies. This treasure trove of data is structured through several specialized “mappers” that examine different aspects of our...

local universe. These fleeting, millisecond-long radio signals act as cosmic probes, revealing how gas is displaced from galaxies by energetic phenomena like stellar feedback and supermassive black holes. The findings provide new constraints on the...