A decades-old astronomical mystery has finally been solved—an enigmatic X-ray signal emanating from deep space turns out to ...

Lobster-eye satellite Einstein Probe captured the X-ray flash from a very elusive ... more than 10 times larger than our sun, and a small compact white dwarf, with a mass similar to our star.

A flash of powerful X-ray light coming from a nova explosion ... Its companion is a white dwarf star that is about 20% more massive than our sun. White dwarfs are the final stage of sun-like ...