Answer:
It's basically a nova. Which is when a star exploded I believe and it is a dwarf planet.
Step-by-step explanation:
A nova occurs when the white dwarf, which is the dense core of a once-normal star, “steals” gas from its nearby companion star. When enough gas builts up on the surface of the white dwarf it triggers an explosion. ... Such a star reaches a point where it can no longer produce nuclear energy in its core.