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

Since the 1980s, a strange X-ray emission has puzzled astronomers. At the heart of the Helix Nebula, a dying star may have ...

Co-author Martin Guerrero from the Institute of Astrophysics of Andalusia told Phys.org that debris from the shattered planet ...

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

A decades-old astronomical mystery has finally been solved—an enigmatic X-ray signal emanating from deep space turns out to ...

In this image from NASA's Spitzer Space Telescope, "cometary knots" on the Helix Nebula show blue-green heads caused by excitation of their molecular material from shocks or ultraviolet radiation.

Space scientists say they have located a planet killer capable of ripping worlds ... The white dwarf (center) - named WD 2226-210 - and the Helix Nebula. (ESA/D. Ducros via SWNS) Dating back to 1980, ...

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 ...

The Helix Nebula. Credit: X-ray ... with NASA’s Chandra X-ray Observatory and ESA’s XMM-Newton. The two space observatories have confirmed that the emissions are coming from the white dwarf ...

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