A new X-ray look at the mesmerizing Helix Nebula reveals an alleged planet killer: a white dwarf that might be the source of ...

The planets are still surrounded by rings of gas and dust from which moons appear to ... it's a bit like taking a 6-1/2-meter ...

The planets themselves (not to scale) have thin rings of plasma heated to around ... a 6-1/2-meter telescope mirror and putting it in outer space by clicking a computer mouse button.

I looked up at that epic black domed sky and thought the stars and planets were real ... suffered a massive outer-space hangover/letdown, where it suddenly seemed as if we’d shot our wad ...