Astronomers observe giant star WOH G64 undergoing unexpected changes

Astronomers are observing the giant star WOH G64 undergoing rapid, unexpected changes, challenging previous assumptions about its stellar evolution. The star, over 1,500 times larger than the Sun, has recently dimmed and appears warmer, suggesting its final life stages may be more complex and faster than anticipated. New observations indicate the presence of hot ions and cool molecules, possibly due to a close binary companion, offering a unique chance to witness stellar death.