Melbourne, February 24, 2026 – Astronomers have detected dramatic changes in WOH G64, one of the universe’s most massive known stars in the Large Magellanic Cloud, signaling it may be hurtling toward a cataclysmic supernova explosion after transitioning from red supergiant to rare yellow hypergiant status.
Star’s Alarming Evolution
First spotted in the 1970s, WOH G64 spans over 1,500 times the Sun’s radius and shines with extreme luminosity. A 2024 Very Large Telescope image revealed its dusty “egg-shaped cocoon,” confirming rapid outer layer ejection. By 2014, spectral analysis showed a temperature spike, size shrink to ~800 solar radii, and helium-burning shift—hallmarks of hypergiant instability leading to core collapse.
Not all supergiants reach this precarious phase; intense pulsations or companion star interactions likely triggered WOH G64’s “superwind,” expelling surface material as fuel depletes.
What Happens Next
Hypergiants like this live fast (under 5 million years) and die violently, forging heavy elements in blasts outshining galaxies briefly. Real-time observation of this pre-explosion phase offers unprecedented supernova insights, though timing remains unpredictable—days, years, or decades away.
For stargazers, WOH G64 underscores stellar life’s fury; southern hemisphere telescopes track its fate closely. Humanity might witness a live cosmic fireworks display.
