Using the Einstein Probe (EP), astronomers have detected a new X-ray transient event, which turned out to be an X-ray flare ...

A supermassive black hole in the spiral galaxy NGC 3783 just delivered an X-ray surprise that astronomers have never watched ...

New observations reveal that the relationship between ultraviolet and X-ray light in quasars has changed over billions of ...

For the first time ever, astronomers have captured two distinct X-ray views of an interstellar comet, providing an unprecedented glimpse into the interplay between a visitor from beyond our solar ...

The mystery of strangely blinking objects scattered throughout the Milky Way just deepened. Something 15,000 light-years away from the Sun isn't just slowly, methodically beaming out radio waves – ...

A series of five new images from NASA’s Chandra X-ray Observatory show the beauty of space as seen in the X-ray wavelength. Data from Chandra has been combined with data from other telescopes ...

Astronomers have mapped out half the universe in X-ray light, using a space telescope called eROSITA. The new map, which contains almost a million X-ray sources, is the basis of dozens of new ...

LOS ANGELES -- A glowing supernova remnant, a nebula shaped like a cat's paw and the iconic "Pillars of Creation" are just a few of the celestial objects that shine in 25 never-before-seen images ...

Editor’s Note: Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Along for the ride is JAXA’s SLIM, or ...

With the help of the world's most powerful X-ray laser, a research team has achieved an important breakthrough: Using the example of the pharmaceutically active substance 2-thiouracil, they applied a ...