Astronomers using the James Webb Space Telescope have discovered mysterious 'little red dots' that may represent the first stars in the universe on the verge of collapse. These compact objects, observed within the first 2 billion years after the Big Bang, have puzzled scientists since their discovery. While initially thought to be active galactic nuclei powered by black holes, new research suggests they could be supermassive stars.

A team from the Harvard and Smithsonian Center for Astrophysics developed models of metal-free supermassive stars with masses up to a million times that of the sun. These 'monster stars' would form from primordial hydrogen and helium gas in the early universe. The researchers found their simulations matched key features of the little red dots, including their extreme brightness and distinctive V-shaped spectral patterns. This challenges the prevailing theory that these objects are actively feeding black holes.

The findings, published in The Astrophysical Journal, suggest these red dots could be supermassive stars in their final moments before collapsing into black holes. However, the extremely short lifetime of such massive stars - potentially only 10,000 years - makes their observation rare. Future observations seeking X-ray emissions or chemical signatures in the surrounding gas could help determine whether these mysterious objects are indeed dying stars or accreting black holes.