Astronomers Track Possible 'Superkilonova' Exploding Twice, Challenging Star Death Theories

• Evidence suggests a rare 'superkilonova' event, combining supernova and kilonova, observed on August 18, 2025, named AT2025ulz.
• Initially, the signal resembled a kilonova (neutron star collision), but later brightened, turned blue, and showed hydrogen signatures, evolving like a supernova.
• This event, if confirmed, could be the first 'superkilonova', challenging current stellar evolution models and understanding of heavy element formation.
• Scientists propose theories like a rapidly spinning star collapsing into two neutron cores that then collide, or a core splitting through fission.
• Further observations are crucial to confirm if it's a single 'superkilonova' or two coincidental events, as certainty remains elusive.

Why It Matters: Possible 'superkilonova' challenges stellar death theories, demanding more research.