"We've always known that we need something to complete the puzzle, but we haven't really known what shape or form those ...

Learn how astronomers found the invisible ionized gas that forms puffy halos surrounding galaxies.

In the grand puzzle of the cosmos, one question continues to defy easy answers: how fast is the universe expanding?

Dark matter is hypothesized to outweigh "ordinary matter" in the universe by a factor of five. That means all the stuff we ...

Lingering Brightness Provides Evidence for How the Planet Met Its Demise Each year, scientists from around the world compete ...

New data involving millions of galaxies and luminous galactic cores is providing fresh evidence that the enigmatic and ...

Despite decades of searching for this signal, astronomers have yet to find it. The problem is that our Earth is too noisy, making it nearly impossible to capture this whisper. The solution is to go to ...

Researchers interrogated the 'sounds' of a cluster of stars within the Milky Way, uncovering a new technique for astrophysicists to probe the universe and learn more about its evolution.

Discover the power of black holes and their jets, and how they impact the formation of stars and potentially habitable worlds ...

The cluster, full of more than 2,500 newborn stars that blaze blue in the Hubble image, is in a galaxy with far fewer heavy chemical substances than the Milky Way. It's mostly made of hydrogen and ...

The clearest and most precise images yet of the universe in its infancy—the ... and helium that later developed into the first stars and galaxies. The team, which includes researchers from ...