Researchers have found what might be a little red dot transitioning into its final state, where x-rays burst through its gas ...

A new kind of stellar explosion provides a novel way to probe the distant universe, according to new results published today in Nature Astronomy. NASA's Hubble Space Telescope and NASA's Chandra X-ray ...

Composite image of the galaxy cluster Abell 2744, also known as Pandora's Cluster, taken by the Hubble and Chandra space telescopes and the Very Large Telescope in Chile. Hot intracluster gas is shown ...

In the early universe, astronomers found a rare light that breaks the rules of how black holes grow. Researchers from Waseda ...

WASHINGTON, Jan 30 (Reuters) - Observations by NASA's James Webb Space Telescope and Chandra X-ray Observatory are providing ...

Data from the XRISM X-ray satellite provide unprecedented detail on how ionized plasma moves in massive galaxy clusters — a question with huge cosmological and astrophysical implications. Read the ...

At its meeting in Paris today, the Science Program Committee of the European Space Agency (ESA) selected the "The Hot and Energetic Universe" as the science theme for its next Large (L-class) mission.

The remnant known as G1.9+0.3 (shown here) came from the most recent supernova in our galaxy. To determine the age of the stellar explosion, astronomers tracked how quickly the remnant was expanding, ...