There's a Smashed Planet at the Heart of the Helix Nebula
An X-ray signal has been detected at the very centre of the Helix Nebula, at the site of its central white dwarf star. It’s a burned out stellar remnant that…
An X-ray signal has been detected at the very centre of the Helix Nebula, at the site of its central white dwarf star. It’s a burned out stellar remnant that…