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 ...

A gorgeous nebula turns out to hold a surprise at its center: a pair of stars that don’t match as they should. Researchers looking at the beautiful NGC 6164/6165 nebula were surprised to learn ...

On the right-hand side of the above image is the Heart nebula, so named because of its resemblance to a human heart. On the left is the Soul nebula, aka the Embryo nebula, but when turned around, this ...