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

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 ...

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

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

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

NASA's Hubble Space Telescope shared stunning images of the mysterious Flame Nebula, a celestial marvel located approximately ...

Since they were first detected over four decades ago, unusually powerful x-ray emissions originating from the site of a dying ...

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

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