Astronomers have been recording the signal for more than four decades, but this is the first time they've nabbed its origin.

The Chandra X-ray Observatory was launched on July 23, 1999 aboard Space Shuttle Columbia. See 25 'never-before-seen' images from the observatory to mark the anniversary. Credit: NASA/CXC/A. Hobart ...

Astronomers have uncovered a baffling cosmic anomaly — a supermassive black hole in galaxy NGC 5084 that appears to be ...

The X-ray signal from WD 2226-210 is similar to the X-ray emissions of two other white dwarfs that do not sit within cocoons ...

"We might have finally found the cause of a mystery that's lasted over 40 years," said researcher Sandino Estrada-Dorado.

After tracking a puzzling X-ray signal from a dying star for decades, astronomers may have finally explained its source: The ...

Researchers also specula... NASA’s James Webb Space Telescope and Chandra X-ray Observatory have unveiled stunning new images of two star clusters in the Small Magellanic Cloud. NGC 602 ...

Such a dramatic cut to a flagship space telescope still in its prime will be felt across the mission's entire operations, ...

For more than 40 years, astronomers have been puzzled by strange X-ray signals coming from the Helix Nebula, a cloud of gas ...

The research team, led by Steven Dillmann of Stanford University was scouring decades-old data from NASA's Chandra X-ray Observatory when it spotted a powerful (but brief) blast of X-rays coming ...

A new study used data from powerful X-ray missions, NASA’s Chandra X-ray Observatory and ESA’s (European Space Agency’s) ...