The Helix Nebula, located 650 light-years from Earth, has baffled scientists for decades. The planetary nebula was created by ...

A decades-old astronomical mystery has finally been solved—an enigmatic X-ray signal emanating from deep space turns out to be the death ... The Helix Nebula, often called the “Eye of God ...

Helix Nebula: This a planetary nebula, which is formed when a star like the Sun runs out of fuel, expands and its outer layers puff off, and then the core of the star shrinks. Orion Nebula ...