X-Rays from Helix Nebula Yields Secret to White Dwarf Enigma
For over forty years, astronomers have been puzzled by X-rays emitted by the white dwarf at the center of the Helix Nebula. A typical component of stars, white dwarfs don’t usually emit X-rays. However, observations using the Chandra and other X-ray telescopes have consistently detected X-ray signals from this location. A recent study provides a … Read more