The existence of massive, elliptical galaxies in the early universe has puzzled astronomers for two decades. An international ...

Faint structures play a crucial role in cosmic development, and scientists are only just beginning to grasp their full extent ...

A family portrait of the Andromeda galaxy and its orbiting dwarf satellites raises questions about how galaxies evolve.

When astronomers look deep into the early universe, they don’t expect to see fully developed cosmic objects but small galaxies, young stars, and black holes still struggling to grow. However, recent ...

WASHINGTON — For the first time ever, astronomers have confirmed the existence of a "failed galaxy," a massive, starless cloud of gas and dark matter that never became a galaxy at all, according to ...

Intense radiation emitted by active supermassive black holes—thought to reside at the center of most, if not all, galaxies—can slow star growth not just in their host galaxy, but also in galaxies ...

How space telescopes capture distant galaxies using infrared imaging, precision optics, and astronomy technology beyond Earth's atmosphere.

New radio observations of molecular gas reveal how dozens of galaxies could have rapidly merged together in the early Universe.