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 ...

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

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 ...

Space scientists say they have located a planet killer capable of ripping worlds to pieces. Researchers believe they've found ...

Astronomers have detected mysterious X-ray signals coming from a nearby white dwarf star for more than 40 years. We may now ...

About 650 light-years from here, in the constellation Aquarius, lies the planetary nebula Caldwell 63, commonly known as the ...

A white dwarf, or dying star, caused the destruction of a Jupiter-sized planet that is only around 650 light years away from ...

The data came from NASA's Chandra X-ray Observatory and the ESA's XMM-Newton. Previously, scientists discovered that a ...

XRISM has uncovered how galaxy clusters evolve—violent mergers create turbulence, preventing hot gas from cooling. This ...