INFO:
An artist’s animation showing one of the possible explanations as to how planet Halla managed to avoid getting swallowed by its host star Baekdu. In this scenario, Baekdu was a binary system comprising a red giant star closely orbiting a white dwarf star. The two stars then merged, and the violent collision between the pair released debris from which the planet Halla formed.
The ‘Forbidden Planet’ That Escaped a Fiery Doom - The New York Times