Unexplained Survival: Astronomers Discover a Mysterious 'Zombie Planet'

Astronomers have discovered a planet, named Halla, orbiting a red giant star called Baekdu, which is currently fusing helium in its core. This is puzzling because the star should have grown so large in the past that it would have engulfed the planet. Possible explanations include the star being part of a binary system, preventing its expansion, or the planet being a relatively newborn one formed from a collision between two stars. This discovery challenges our understanding of where exoplanets can exist.