Summary:
- NASA's Hubble Space Telescope has discovered a rare white dwarf star that is the remnant of a merger between two white dwarfs.
- White dwarfs are the dense, collapsed cores of stars that have exhausted their nuclear fuel, and this particular white dwarf is unusual because it is much hotter and more massive than a typical white dwarf.
- The discovery of this rare white dwarf merger remnant provides insights into the complex processes that can occur when two white dwarfs collide and merge, which can lead to the formation of unusual and intriguing stellar objects.