On February 25, 2024, XRISM used its Resolve instrument to observe the neutron star GX13+1, which is the core of a once larger star that has burned out. GX13+1 is a bright X-ray source. These X-rays ...

When gravity—an invisible yet ubiquitous force—bends and distorts light from distant galaxies, Earthbound observers get a ...

The X-Ray Imaging and Spectroscopy Mission (XRISM) has revealed an unexpected difference between the powerful winds launching from a disc around a ...

Astronomers using the Webb Telescope may have found a new type of object: cold, glowing black hole stars from the early ...

The QROCODILE experiment sets world-leading limits on light dark matter, marking a breakthrough in the search for the unseen.

For scientists, that has long posed a problem: According to physicists’ best current theories, matter and its counterpart, ...

Astronomers at Penn State have nicknamed the objects “universe breakers,” which may be unusual black hole atmospheres and could represent a missing link in the fast growth of supermassive black holes.

Astronomers uncovered seven dust-shrouded quasars from Cosmic Dawn, doubling the known tally of early supermassive black holes.

The Gaia space observatory helped astronomers chart 4,000 light-years worth of our home galaxy.

For all our telescopes and colliders, dark matter has remained an elusive ghost for the better part of a century. It ...

When the "little red dots" were first discovered in 2022, scientists thought the objects might be galaxies as mature as the Milky Way, which is about 13.6 billion years old. That's because galaxies ...