According to the new DESI numbers, dark energy may be changing over time—either causing the universe’s expansion to ...

University of Arizona researchers are among a group of scientists who hope to discover what happened immediately after the Big Bang, when the universe expanded in a fraction of a ...

Astronomers have made a surprising discovery that challenges current theories of galaxy formation. A colossal disk-shaped ...

The findings reveal unusual chemical signatures and offer new insights into the behavior of novas beyond the Milky Way.

In the turbulent heart of the Milky Way, near the supermassive black hole Sagittarius A*, astronomers have uncovered a ...

An accidental discovery by a team of astronomers has upended existing theories about how galaxies formed in the early ...

Though tiny, this newfound satellite galaxy around M31 offers big lessons — and questions — about how galaxies evolve.

Galaxies like the Milky Way boast more than spirals; they also have feathers, where clumps of new stars are born. Astronomers ...

Swirling through the Milky Way's central zone, in the turbulent region surrounding the supermassive black hole at the core of ...

The Euclid space telescope has dropped its first data and deep field observations showing millions of galaxies in great ...

CU Boulder researchers found massive, dust-filled galaxies called UFOs using JWST, challenging previous galaxy formation ...

Astronomers have made an exciting discovery—a massive spiral disk galaxy, much larger than expected, in the early universe.