
Jaw-dropping NASA image reveals a dying star at the heart of the Helix Nebula — and it may have just murdered a planet
A new X-ray look at the mesmerizing Helix Nebula reveals an alleged planet killer: a white dwarf that might be the source of strange emissions from the nebula. The Helix Nebula, also known as Caldwell 63, is 650 million light-years from Earth, according to …