Astronomers found that star clusters do not always form the same balance of small and large stars, challenging a long-standing assumption used to measure galaxies. Gaia data show that a key dividing ...

This eROSITA data set is the most comprehensive catalogue of the X-ray universe currently available.

Since it became operational in 2022, the James Webb Space Telescope (JWST) has released some truly breathtaking views of the cosmos. These images highlight how advancements since the days of the ...

Hold on to your telescopes: The DESI Legacy Imaging Surveys team has released the largest-ever 2D color map of the universe. The 5.6-trillion-pixel map contains nearly 4 billion celestial objects, ...

Astronomers have nearly doubled the number of known cosmic X-ray sources, offering the most comprehensive public view yet of the universe's hottest and most energetic objects. The ...

Some black holes roaming the Universe today may actually be older than the Big Bang. A new cosmic “bounce” model suggests the ...

We know many things about our universe, but astronomers are still debating exactly how fast it is expanding. In fact, over the past two decades, two major ways to measure this number—known as the ...

New supercomputer simulations suggest the Milky Way could be surrounded by dozens more faint, undetected satellite galaxies—up to 100 more than we currently know. These elusive "orphan" galaxies have ...

Astronomers have found evidence that the proportion of large and small stars varies with the environment where those stars ...

In its latest image release, the Rubin Observatory previews what a decade of repeated observations could reveal.

An international team of astronomers has identified three ultra-massive galaxies—each nearly as massive as the Milky Way—already in place within the first billion years after the Big Bang. The ...

3200MP, 500,000+ galaxies and 50,000+ stars: These are the numbers from the latest image coming from the world’s largest ...